《快樂姐妹們》此劇講述踏入三十歲後時期的女性們，通過美麗而激烈的愛情來尋找認同感的故事。
快樂姐妹們 角色介紹
主要人物
| 演員 | 角色 | 介紹 |
|---|---|---|
| 沈宜英 | 尹禮恩 | 七年全職家庭主婦，為了維持婚姻受盡委屈，經常被婆婆欺負，然而卻被自己信任的丈夫背叛，最終鬧得離婚收場。 |
| 韓英 | 尹尚恩 | 鋼琴學院院長，載雄的合約婚姻伴侶。 |
| 吳大奎 | 崔載雄 | 達米整形外科醫院院長，尚恩的合約婚姻伴侶。 |
| 姜瑞俊 | 李震懾 | JU醫療的社長，禮恩的前夫，和華英發展婚外情，被華英設計讓禮恩知道兩人的關係，最終和禮恩離婚。 |
| 李時剛 | 閔亨洙 | TMO集團的本部長，一直幫助禮恩，後來對她有好感。 |
| 潘素英 | 趙華英 | 震懾的祕書，並與他同居。為了得到想要的不擇手段，結果成功嫁給了李震懾，嫁入李家後懷孕，更加變本加厲，惡整婆婆，欺負小姑。 |
震懾周邊人物
| 演員 | 角色 | 介紹 |
|---|---|---|
| 林採茂 | 李成必 | 震懾的爸爸，經常夾在兩個女人的中間，左右為難。 |
| 金善化 | 陳末心 | 震懾的媽媽，成必的元配，經常欺負禮恩。 |
| 吳英實 | 楊慧晶 | 成必的妾侍，豐年豬腳公司的社長。 |
| 許恩晶 | 李世蘭 | 珍燮的妹妹，喜歡亨洙。 |
| 李藝彬 | 李炳淑 | 成必與慧晶的女兒，長相一般，一直遇不到好男人。 |
藝恩周邊人物
| 演員 | 角色 | 介紹 |
|---|---|---|
| 金東根 | 周萬福 | 多紅最好的朋友，W炸雞的社長。 |
| 金寶娜拉 | 高多紅 | 與藝恩和尚恩最親密的姐姐。 |
| 李相美 | 姜得子 | 藝恩的媽媽。 |
| 李成旭 | 黃秀燦 | 多紅的長子，小學五年級生。 |
| 高娜熙 | 黃秀子 | 多紅的女兒。 |
其他人物
| 演員 | 角色 | 介紹 |
|---|---|---|
| 金英任 | 羅勝美 | TMO集團的社長，亨洙的媽媽，末心多年的好友也是冤家。 |
| 成鬥燮 | 車道勳 | 作曲家，亨洙的好友，尚恩的愛人。 |
| 張根 | 孔日三 | 華英的舊情人。 |
| 金荷琳 | 盧宥娜 | 亨洙的舊情人。 |
| 李英恩 | 崔珍熙 | 載雄的女兒，喜歡尚恩，一直想要讓載雄和尚恩結婚。 |
| 車正宇 | 車祕書 | 勝美的祕書。 |
快樂姐妹們 收視率
| 集數 | 播出日期 | AGB收視率 | TNmS收視率 | ||
|---|---|---|---|---|---|
| 大韓民國（全國） | 首爾（首都圈） | 大韓民國（全國） | 首爾（首都圈） | ||
| 1 | 2017/12/04 | 8.8% | 7.6% | 9.8% | 7.2% |
| 2 | 2017/12/05 | 8.7% | 8.2% | 9.4% | 7.2% |
| 3 | 2017/12/06 | 8.2% | 7.6% | 9.4% | 7.7% |
| 4 | 2017/12/07 | 8.3% | 7.8% | 9.2% | 6.6% |
| 5 | 2017/12/08 | 8.5% | 7.8% | 9.3% | 6.6% |
| 6 | 2017/12/11 | 9.0% | 8.0% | 9.6% | 8.3% |
| 7 | 2017/12/12 | 9.1% | 8.5% | 10.4% | 8.7% |
| 8 | 2017/12/13 | 8.7% | 7.7% | 9.4% | 7.4% |
| 9 | 2017/12/14 | 8.6% | 7.9% | 10.1% | 7.5% |
| 10 | 2017/12/15 | 8.9% | 8.2% | 9.8% | 7.5% |
| 11 | 2017/12/18 | 9.0% | 8.4% | 10.6% | 7.9% |
| 12 | 2017/12/19 | 9.2% | 8.5% | 10.3% | 7.7% |
| 13 | 2017/12/20 | 9.4% | 9.1% | 9.6% | 7.5% |
| 14 | 2017/12/21 | 9.3% | 8.2% | 10.4% | 8.3% |
| 15 | 2017/12/22 | 9.8% | 8.9% | 9.5% | 7.5% |
| 16 | 2017/12/25 | 7.8% | 8.4% | ||
| 17 | 2017/12/26 | 9.2% | 8.6% | 11.1% | |
| 18 | 2017/12/27 | 9.0% | 8.0% | 11.2% | 8.3% |
| 19 | 2017/12/28 | 10.6% | 9.6% | 10.5% | 8.0% |
| 20 | 2017/12/29 | 9.8% | 8.6% | 10.0% | 7.3% |
| 21 | 2018/01/01 | 7.4% | 8.0% | ||
| 22 | 2018/01/02 | 9.2% | 8.6% | 10.7% | |
| 23 | 2018/01/03 | 9.7% | 9.2% | 10.1% | |
| 24 | 2018/01/04 | 9.8% | 9.4% | 10.9% | |
| 25 | 2018/01/05 | 10.2% | 9.3% | 11.0% | |
| 26 | 2018/01/08 | 10.1% | 9.7% | 11.0% | |
| 27 | 2018/01/09 | 10.0% | 9.2% | 11.0% | |
| 28 | 2018/01/10 | 9.9% | 9.3% | 10.7% | |
| 29 | 2018/01/11 | 10.3% | 9.5% | 12.0% | |
| 30 | 2018/01/12 | 10.4% | 9.7% | 11.7% | |
| 31 | 2018/01/15 | 10.0% | 9.0% | 12.5% | |
| 32 | 2018/01/16 | 10.1% | 9.3% | 11.2% | |
| 33 | 2018/01/17 | 10.0% | 9.2% | 11.6% | |
| 34 | 2018/01/18 | 10.9% | 9.7% | 11.7% | |
| 35 | 2018/01/19 | 10.2% | 9.3% | 12.2% | |
| 36 | 2018/01/22 | 10.2% | 9.5% | 11.4% | |
| 37 | 2018/01/23 | 11.5% | 10.4% | 12.1% | |
| 38 | 2018/01/24 | 11.1% | 10.1% | 13.1% | |
| 39 | 2018/01/25 | 10.6% | 9.7% | 13.1% | |
| 40 | 2018/01/26 | 11.7% | 10.7% | 12.8% | |
| 41 | 2018/01/29 | 10.7% | 9.5% | 13.2% | |
| 42 | 2018/01/30 | 11.4% | 9.5% | 12.8% | |
| 43 | 2018/01/31 | 11.7% | 10.3% | 13.7% | |
| 44 | 2018/02/01 | 12.3% | 11.0% | 13.8% | |
| 45 | 2018/02/02 | 11.3% | 10.1% | 13.6% | |
| 46 | 2018/02/05 | 11.7% | 9.7% | 14.5% | |
| 47 | 2018/02/06 | 11.9% | 10.5% | 13.5% | |
| 48 | 2018/02/07 | 12.0% | 10.9% | 14.1% | |
| 49 | 2018/02/08 | 8.3% | 7.5% | 9.7% | |
| 50 | 2018/02/12 | 11.3% | 10.4% | 12.8% | |
| 51 | 2018/02/13 | 11.1% | 9.8% | 12.9% | |
| 52 | 2018/02/14 | 9.0% | 8.1% | 10.7% | |
| 53 | 2018/02/19 | 8.7% | 7.7% | 10.8% | |
| 54 | 2018/02/20 | 8.8% | 8.1% | 11.7% | |
| 55 | 2018/02/21 | 9.4% | 8.1% | 11.1% | |
| 56 | 2018/02/22 | 11.5% | 9.8% | 13.7% | |
| 57 | 2018/02/23 | 11.1% | 9.7% | 13.5% | |
| 58 | 2018/02/26 | 10.5% | 9.0% | 12.7% | |
| 59 | 2018/02/27 | 11.2% | 10.1% | 13.2% | |
| 60 | 2018/02/28 | 10.3% | 8.7% | 13.2% | |
| 61 | 2018/03/01 | 11.1% | 9.8% | 13.7% | |
| 62 | 2018/03/02 | 11.1% | 9.9% | 14.0% | |
| 63 | 2018/03/05 | 11.6% | 10.1% | 14.2% | |
| 64 | 2018/03/06 | 11.1% | 10.0% | 13.7% | |
| 65 | 2018/03/07 | 10.0% | 8.5% | 13.1% | |
| 66 | 2018/03/08 | 10.8% | 9.7% | 13.8% | |
| 67 | 2018/03/09 | 11.0% | 9.4% | 13.8% | |
| 68 | 2018/03/12 | 10.7% | 8.9% | 13.5% | |
| 69 | 2018/03/13 | 10.2% | 9.2% | 12.8% | |
| 70 | 2018/03/15 | 10.8% | 9.3% | 13.4% | |
| 71 | 2018/03/16 | 11.8% | 10.4% | 13.9% | |
| 72 | 2018/03/19 | 10.8% | 9.3% | 14.0% | |
| 73 | 2018/03/20 | 10.7% | 9.3% | 13.7% | |
| 74 | 2018/03/21 | 11.2% | 9.2% | 14.0% | |
| 75 | 2018/03/22 | 11.2% | 9.8% | 13.9% | |
| 76 | 2018/03/23 | 11.8% | 10.1% | 15.0% | |
| 77 | 2018/03/26 | 10.7% | 9.2% | 13.6% | |
| 78 | 2018/03/27 | 11.5% | 10.3% | 14.0% | |
| 79 | 2018/03/28 | 11.2% | 9.8% | 13.9% | |
| 80 | 2018/03/29 | 11.5% | 10.3% | 14.0% | |
| 81 | 2018/03/30 | 11.1% | 9.8% | 13.6% | |
| 82 | 2018/04/02 | 11.5% | 10.5% | 12.9% | |
| 83 | 2018/04/03 | 11.3% | 10.3% | 13.2% | |
| 84 | 2018/04/04 | 10.8% | 9.8% | 14.4% | |
| 85 | 2018/04/05 | 11.8% | 11.0% | 14.6% | |
| 86 | 2018/04/06 | 12.1% | 13.8% | ||
| 87 | 2018/04/09 | 11.1% | 9.9% | 13.1% | |
| 88 | 2018/04/10 | 11.4% | 10.4% | 13.3% | |
| 89 | 2018/04/11 | 11.3% | 9.8% | 13.5% | |
| 90 | 2018/04/12 | 12.1% | 10.7% | 13.7% | |
| 91 | 2018/04/13 | 12.0% | 10.9% | 13.3% | |
| 92 | 2018/04/16 | 11.1% | 9.6% | 13.9% | |
| 93 | 2018/04/17 | 11.9% | 10.6% | 14.2% | |
| 94 | 2018/04/18 | 11.1% | 9.7% | 12.9% | |
| 95 | 2018/04/19 | 12.0% | 10.8% | 13.8% | |
| 96 | 2018/04/20 | 11.7% | 10.2% | 13.7% | |
| 97 | 2018/04/23 | 11.5% | 12.8% | ||
| 98 | 2018/04/24 | 12.4% | 10.1% | 15.0% | |
| 99 | 2018/04/25 | 12.3% | 11.1% | 13.8% | |
| 100 | 2018/04/26 | 11.3% | 9.8% | 12.9% | |
| 101 | 2018/04/30 | 10.2% | 8.4% | ||
| 102 | 2018/05/01 | 10.7% | 9.4% | 13.1% | |
| 103 | 2018/05/02 | 11.8% | 11.0% | 12.6% | |
| 104 | 2018/05/03 | 11.9% | 10.9% | 13.9% | |
| 105 | 2018/05/04 | 11.2% | 9.9% | 13.0% | |
| 106 | 2018/05/07 | 10.7% | 10.0% | 12.5% | |
| 107 | 2018/05/08 | 11.4% | 10.1% | 13.5% | |
| 108 | 2018/05/09 | 11.3% | 12.9% | ||
| 109 | 2018/05/10 | 9.9% | 13.1% | ||
| 110 | 2018/05/11 | 11.5% | 10.5% | 13.0% | |
| 111 | 2018/05/14 | 11.2% | 10.1% | 13.8% | |
| 112 | 2018/05/15 | 11.0% | 10.4% | 12.1% | |
| 113 | 2018/05/16 | 10.7% | 9.5% | 13.6% | |
| 114 | 2018/05/17 | 11.6% | 11.1% | 14.0% | |
| 115 | 2018/05/18 | 10.9% | 14.4% | ||
| 116 | 2018/05/21 | 10.9% | 9.9% | 13.8% | |
| 117 | 2018/05/22 | 9.8% | 8.8% | 10.0% | |
| 118 | 2018/05/23 | 11.4% | 10.2% | 14.4% | |
| 119 | 2018/05/24 | 12.0% | 10.9% | 14.0% | |
| 120 | 2018/05/25 | 11.2% | 9.7% | 13.0% | |
| 平均收視率 | 10.61% | 9.55% | 12.45% | － | |