There is a hard lump in the right lumbar region, which may be caused by the following problems: First, it may be a local inflammation and edema caused by the lumbar triple transverse process syndrome, in which case the hard lump in the right lumbar region is usually in the lumbar triple transverse process, and the hard lump is abnormally painful when pressed, accompanied by the symptoms of muscle tension or restricted movement of the right lumbar region. Second, if the hard lump in the right lumbar region is in the place of the posterior superior iliac spine, it is usually a hard lump caused by lumbar muscle strain, and the hard lump is usually injected into the place where the lumbaris major muscle is connected with the posterior superior iliac spine, which is caused by aseptic inflammation after frequent strain and strain. Thirdly, it may be a lumbar skin or soft tissue mass, such as a common lipoma, fibroma or sebaceous cyst, which can be clearly diagnosed by going to the hospital to check the local ultrasound.