Objective: To study the changes in kinematics and joint coordination of the waist and hips during sit-to-stand and stand-to-sit tasks in patients with lumbar disc herniation (LDH). Methods: The Vicon 3D motion capture system was used to collect the kinematics data of 20 healthy controls and 20 LDH subjects, and compare the movement of the lumbar spine and hip joints in the sitting task between the two groups through Statistical Parametric Mapping (SPM) Mode difference. Results: 1) During the sitting to standing tasks, LDH subjects’ lumbar spine flexion and extension range and hip joint abduction angle were significantly limited (p<0.05), and the hip flexion angle increased (p<0.05); 2) SPM analysis showed that the two groups were sitting At the initial stage of erection (10-13%), there was a statistically significant difference in the flexion angle of the lumbar spine (p=0.044), the flexion angle of the LDH subjects was significantly reduced, while the hip flexion angle from 2-14% was significantly increased (p=0.009); from standing to sitting (65-68%), LDH subjects showed increased hip abduction angle (p=0.048). Conclusion: LDH subjects have limited lumbar flexion and hip abduction functions during sitting and standing, and they need to be compensated with increased hip flexion activities to complete functional tasks. In the clinical evaluation, we should focus on the changes in the motor function of the spine and hips.