The utility model provides a device for measuring a pour point and a solidification point of liquid. The device is characterized by comprising a vertical testing pipeline, an electromagnetic valve, a refrigerator and a photoelectric detector, wherein the electromagnetic valve is arranged at the upper end of the vertical testing pipeline, the refrigerator is fixedly wrapped around the vertical testing pipeline, the photoelectric detector is arranged at the bottom of the vertical testing pipeline through a bracket and comprises an infrared ray emitting end and an infrared ray receiving end which are respectively arranged at two sides of an outlet end of the vertical testing pipeline, a connecting line of the infrared ray emitting end and the infrared ray receiving end passes through a downwards-extending center line of the vertical testing pipeline, and the distance between the connecting line and the outlet end of the vertical testing pipeline is equal to the inner diameter of the outlet end. The device is simple in operation, accurate in measurement and excellent in functions.