Pain in the root of the thigh in postpartum women is most likely caused by inflammation of the hip joint, inflammation of the sacroiliac joint or injury. If the pain at the root of the thigh is accompanied by pain in the lumbosacral area, you can apply ointment to the lumbosacral area to soothe the tendons and activate the blood, such as gold ointment and anti-stasis and pain ointment, and it is better not to take oral medication because of breastfeeding. In addition to the pain at the root of the thigh, if the pain worsens when the thigh moves, topical ointment should be applied near the hip joint, together with acupuncture treatment and manual massage treatment, which can effectively relieve the pain symptoms.