The invention provides a solar heat-insulating film reflectivity and transmissivity tester. The tester comprises a packaging machine box and further comprises an infrared band spectrum emission source, an infrared reflection receiver, an infrared transmission receiver, a first analog-digital converter, a second analog-digital converter, a microcontroller and a displayer, all of which are arranged in the packaging machine box. Infrared spectral signals emitted by the infrared band spectrum emission source enter a small hole, and a part of the infrared spectral signals is reflected to the infrared reflection receiver by a solar heat-insulating film and then enters the first analog-digital converter to be converted into digital signals; the other part of the infrared spectral signals penetrates through the solar heat-insulating film to be transmitted to the infrared transmission receiver, and then enters the second analog-digital converter to be converted into digital signals. The microcontroller generates infrared reflectivity and transmissivity according to the digital signals output by the first analog-digital converter and the digital signals output by the second analog-digital converter, and transmits the reflectivity and transmissivity to the displayer to be displayed. By means of the tester, the reflectivity and transmissivity of the solar heat-insulating film can be accurately measured, and users can visually see the reflectivity and the transmissivity.