The pain on the right side of the place where the waist is connected to the hip may be caused by myofasciitis, muscle strain and lumbar disc herniation. 1. Myofasciitis: Because the area connecting the waist and hip belongs to the attachment point and starting point of the muscles, frequent pain may be caused by inflammation of the fascia due to injury, which may lead to myofasciitis. 2. Muscle strain: muscle strain leads to pain in the connection place between waist and hip, mainly because of excessive exercise intensity, long-term bad habits lead to long-term or short-term muscle strain and local pain. 3. Herniated lumbar intervertebral disc: pain in the connection place between waist and hip may be caused by herniated lumbar intervertebral disc, mainly because the herniated intervertebral disc will compress the local nerves of the patient, which will stimulate the patient’s waist and hip to produce pain. After the appearance of myofasciitis and muscle strain, it is best to timely treatment, to avoid untimely treatment to aggravate the disease.