The invention discloses a vehicle-window protective screening of a rear-side vehicle door. The vehicle-window protective screening of the rear-side vehicle door comprises a vehicle-window outer portion of the vehicle-window protective screening, a vehicle-window inner portion of the vehicle-window protective screening and a vehicle-window internal use shading pleated cloth curtain part which is connected with the vehicle-window inner portion of the vehicle-window protective screening. The vehicle-window outer portion of the vehicle-window protective screening comprises a nylon cloth doorframe outer covered edge, an outer protective screening, an outer window of a convenient window and a magnetic absorbing iron bar. The vehicle-window inner portion of the vehicle-window protective screening comprises a nylon cloth doorframe inner covered edge, an inner protective screening, an inner window of the convenient window and a locating snap fastener of a shading curtain. The vehicle-window internal use shading pleated cloth curtain part is connected with the vehicle-window inner portion of the vehicle-window protective screening through the snap fastener of the shading curtain. The vehicle-window protective screening is simple in structure and convenient to install and dismantle, and an extra installation structure is not needed. The lifting and dropping of a vehicle-window glass cannot be influenced, and the privacy in a vehicle can be effectively protected.