The pain in the upper right thigh may have the following causes: 1. If the pain is in the lateral thigh, it may be caused by bursitis or a bouncing hip, patients with these two diseases often have pain in the proximal femoral trochanter, and if it is a bouncing hip, it can also be accompanied by a bouncing sound when walking, at which point the relevant investigations and related tests should be performed to exclude other diseases for diagnosis. 2. 3, femoral head necrosis of the hip joint, when the femoral head necrosis can appear around the hip discomfort, can lead to pain in the upper thigh, then to carry out nuclear magnetic or CT examination of the femoral head, for early diagnosis and treatment. 4, impingement syndrome, if the hip joint has impingement syndrome, can also lead to pain in the upper thigh. If the hip joint has impingement syndrome, it can also lead to pain in the upper thigh, and it is necessary to carry out X-ray and MRI of the hip joint for diagnosis and treatment.