The functions of new sex dolls will no longer be limited to a single scenario, but will expand to medical, psychological and other fields. In rehabilitation medicine, the torso sex doll can be used as an auxiliary tool for limb training, and its adjustable joint resistance system helps patients recover muscle strength; in the field of psychotherapy, the new sex doll with emotional soothing function can relieve the tension of patients with anxiety through bionic breathing rhythm and temperature conduction. This cross-field application has transformed the new sex doll from a private product to a life-assisting device with practical value, giving the torso sex doll a wider social significance.