There are the following possibilities for crotch pain: 1. pelvic fractures, femoral neck fractures, intertrochanteric fractures caused by traumatic injuries such as falls, car crashes, heavy bruises, etc. 2. crotch pain can be caused by long-term hormone use, long-term alcohol consumption or necrosis of the femoral head caused by other factors. 3. degenerative diseases of the middle-aged and elderly, such as osteoarthritis of the hip joint, osteophytes, etc. can cause crotch pain. 4. The pain can be caused by congenital diseases, such as congenital hip dysplasia, asymmetric socket head, congenital hip dislocation, etc. 5, lumbar disc herniation, lumbar disc herniation compresses the nerves that innervate the muscles around the hip bone, which can cause hip pain. 6, if combined with breast cancer, gastrointestinal tumors and other malignant tumor diseases appear hip pain, bone metastases should be considered. 7, long time practice frog jumping, long distance large strides and other strenuous exercises. Long-distance striding exercises and other strenuous activities of the hip joint can easily lead to muscle strain around the hip joint and cause pain in the hip bone.