Hip line asymmetry mainly refers to the asymmetry of the number, length and depth of the transverse hip line on both sides. It may be caused by certain physiological factors or related to certain diseases, such as hip dislocation, hip dysplasia, etc. It should be consulted in time to find out the cause of the disease. 1. Physiological factors: most of the hip line asymmetry in the adult stage is caused by uneven distribution of fat in the lower limbs, mostly seen in obese people, with no obvious effect on the human body’s health, generally without special treatment. 2. Pathological factors Hip dislocation: refers to the femoral head is located at the edge of the acetabulum, but not completely dislocated from the acetabulum. Due to the hip muscle pulling upward displacement, resulting in bilateral lower limb unequal length, can cause bilateral hip stripe asymmetry. In the early stages of the disease, there are usually no obvious symptoms and the deformity can be corrected by wearing a brace. Older children and adolescents may develop symptoms such as limping and pain, and surgical treatment needs to be considered. Hip dysplasia: It is a common bone and joint deformity, usually related to heredity, laxity of joint ligaments and abnormal fetal position. Patients may have unilateral dislocation, which may be manifested as asymmetry of hip stripe in early stage. Timely surgical incision and repositioning treatment is needed. Patients with asymmetric hip lines should seek timely medical treatment for early detection, early diagnosis and early treatment, so as not to delay the condition and cause irreversible damage.