: Objective To analyze the lumbar and hip imaging data of professional equestrian athletes and amateur riders to understand the explore of chronic diseases in the hip and waist of the rider. Methods Twenty-seven equestrian athletes or amateurs from Shanghai Equestrian Sports Management Center were selected. They were divided into chronic waist pain group, chronic hip pain group and normal group. Collect their hip and waist related medical history data, hip and waist X-ray, MRI and surface electromyography test of core muscle group. Results The JOA score of the lumbar spine of patients with chronic low back pain was significantly lower than that of the normal group (P＜0.05). The volunteers had relatively mild chronic hip pain, but the Harris score was significantly lower than that of the normal group (P＜0.05). The JOA score of the equestrian rider’s waist is significantly correlated with the Pfirrmann grading. However, the VAS and Harris scores of hip pain have no significant correlation with imaging parameters. Among the 18 volunteers with chronic low back pain, 8 volunteers had PI-LL>10°. The root mean square amplitude (RMS) of rectus abdominis, erector spinalis, rectus femoris, gluteus medius and multifidus in riding position were greater than those in normal sitting position (P＜0.05). Conclusion The cause of chronic waist pain for the riders may be mainly related to soft tissue overwork and lumbar degeneration. The changes in the lumbar-hip sagittal sequence pelvic inclination angle and sacral inclination angle can reflect the degree of lumbar stiffness of the riders.