Quadriceps femoris rehabilitation training bed

The invention discloses a quadriceps femoris rehabilitation training bed, and relates to the field of medical devices. The quadriceps femoris rehabilitation training bed includes a bed body, two flexion and extension mechanisms, two foot posture adjustment mechanisms, two guideways, two driving mechanisms and a controller. Each flexion and extension mechanism comprises a thigh support component and a crus support component, wherein one end of the thigh support component is articulated with a fixed support base connected with the bed body, the other end of the thigh support component is articulated with the end of the crus support component, the lower portion of the other end of the crus support component is articulated with a slider, and each slider can slide on the corresponding guide rail. The ends, away from the thigh support components, of the crus support components are provided with the foot posture adjustment mechanisms, and the ends, away from the crus support components, of the thigh support componen