The invention relates to a bionic apparatus treating knee joint pain through massage. The bionic apparatus treating the knee joint pain through the massage is provided with a chair, a support device, a massage device, a slide block mechanism and a cable rope, the chair is provided with a seat, a handrail, a support rod, a slide rail, a platform and a base, the support device is provided with a shank support device, a pedal, a support, a shank binding belt, an ankle binding belt and a slide rod, the massage device is provided with a massage head, a connecting rod and a connecting device, and the slide block mechanism is provided with a slide block, a connecting rod, a support frame and a snap ring. The bionic apparatus treating the knee joint pain through the massage has the advantages of being capable of adjusting the height of the seat according to the height of a patient, adjusting the angle of the support device according to the leg length of the patient and self physiological characteristics, effectively fixing the position of the leg of the patient, generating directed and quantitative acting force during treatment, and exerting the tractive effort during knee adjusting in a sitting position.