The invention discloses a handcart operating platform for a 10-35 KV breaker in a substation. The handcart operating platform comprises a top plate and a base, wherein the bottom of the base is provided with walking wheels. The top plate is connected with the base through multiple cylindrical rods. The cylindrical rods are in threaded connection with the top plate and are connected with the base through bearings. The base is provided with a driving wheel disk. The driving wheel disk is arranged on the base through a rotary shaft arranged at the center of the base. The driving wheel disk is tangent to all the cylindrical rods and is in meshing connection with all the cylindrical rods. The driving wheel disk is provided with a rotary disk. The cylindrical rods are driven to rotate through the driving wheel disk, so that ascending and descending of the top plate are achieved; thus, the gravity center of the breaker and the handcart operating platform is effectively lowered, the stability of the breaker and the handcart operating platform in the moving process is enhanced, and toppling and other conditions are avoided. The handcart operating platform is simple in structure, easy and convenient to operate and high in practicality.