The invention provides an experimental machine for testing extrusion properties of rubber. The experimental machine for testing extrusion properties of rubber comprises a machine head, a machine body, a transmission mechanism, screws, a temperature control device and a control system. The control system comprises temperature thermocouples arranged on the machine body. The experimental machine for testing extrusion properties of rubber is characterized in that the screws have at least two helical structures; the tails of the screws are removably connected to a main transmission shaft of the transmission mechanism; and the control system also comprises an infrared temperature and speed detection device arranged on a rubber outlet of the machine head, and a torque sensing device arranged on an output shaft of a motor. The experimental machine for testing extrusion properties of rubber can realize comprehensive testing of extrusion performances of rubber prepared according to different formulas, provides reasonable and accurate technical conditions for actual production, improves the quality of rubber materials and rubber products, reduces energy consumption, and provides the basis for designing of various rubber extruders. The temperature control device has a simple structure, is convenient for control, and reduces a loss and a cost.