In the human body, the joints that can do circular movement are wrist joint, shoulder joint, thumb carpometacarpal joint, hip joint. 1. Take the hip joint as an example: the hip joint consists of the head of the femur and the acetabulum, which is a mortar and pestle joint. Inside the acetabulum, only the lunate surface is covered with articular cartilage, and the acetabular fossa is filled with fat, also known as Haversian glands, which can be extruded or inhaled with the increase or decrease of the intra-articular pressure, in order to maintain the balance of intra-articular pressure. There is an articular glenoid rim attached to the rim of the acetabulum. It deepens the depth of the articular fossa. In the acetabular notch on the transverse frame of the transverse acetabular ligament, there are nerves, blood vessels, etc. through. 2. Circumduction is one of the ways of joint movement. Circling motion of a joint means that one end of the joint is the fixed end and the core, and the other end is the moving end that moves in a circle around the fixed end. In the human body, joints with frontal and sagittal axes are capable of circular motion. 3. In medicine, not only the two-axis joints like the wrist joint can do circular motion, but also the three-axis structures like the shoulder joint can do circular motion. Circling movements can be understood as the sequential and continuous movements of flexion, extension, spreading and contraction. Circling helps the body to perform more motor functions.