If the back pain after intercourse is not obvious, you can observe it first, if it can be relieved after 1-2 days, the situation is not serious. It may be caused by too frequent intercourse, so you should reduce the number of intercourse and keep it about 2-3 times a week. If the back pain after intercourse is accompanied by abdominal swelling and pain, and is not relieved after proper rest, it may be caused by gynecological diseases such as pelvic inflammatory disease, pelvic effusion and adnexitis, and gynecological examination must be conducted. The back pain after intercourse is related to kidney deficiency, so you can eat some kidney food or take the Six Flavored Dihuang Pills orally to get relief, and the back pain after intercourse can be applied with hot towels or massage. To improve this symptom, you should eat more nutritious food, strengthen your body, and have annual gynecological checkups, treat gynecological diseases in a timely manner, take rest, keep warm, and maintain the hygiene of your vulva.