Modularized passive lower limb auxiliary supporting mechanism

The modularized passive lower limb auxiliary supporting mechanism comprises a hip joint function module, a knee joint function module and a foot function module, the lower end of the hip joint function module is connected with the upper end of the knee joint function module through a butt joint rail groove, and the hip joint function module and the knee joint function module are used for adjusting the thigh length of the human body in a matched mode. The lower end of the knee joint function module is connected with the upper end of the foot function module through a butt joint rail groove and used for adjusting the length of the shank of the human body in a matched mode, and trend balance stabilizing springs are designed on the hip joint function module and the knee joint function module and used for helping the human body achieve gait supporting. Movement stress of hip joints, knee joints and ankle joints in the walking process is reduced, joint movement fatigue is reduced, and a good walking assisting effec