Objective: To study the effect of pain on lumbar and hip joint torque in patients with lumbar disc herniation (LDH) during sitting and standing. Method: The dynamic data of 20 healthy controls and 20 LDH subjects were collected using an AMTI dynamometer. Statistical Parameter Mapping (SPM) was used to analyze the difference in torque between the lumbar spine and hip joints in the sagittal and coronal planes during the sitting and standing task between the two groups. Result: 1) In the sitting and standing task, the maximum lumbar flexion moment and maximum hip adduction moment of LDH subjects significantly increased (p<0.05); 2) SPM analysis showed that during the initial stage of standing (37-42%), the hip joint abduction torque of the LDH group was greater than that of the healthy control group, with a statistical difference (p=0.007). Conclusion: LDH subjects have unstable lumbar spine and pelvis during sitting and standing, especially during the stationary stage, which makes it difficult to achieve balance in their body. Therefore, it is necessary to increase the hip joint abduction torque to maintain pelvic stability. In clinical evaluation and treatment, emphasis should be placed on the stable function of the spine and pelvis.