The invention relates to an experiment platform for carbon deposition and coking of fuel in the technical field of fuel power devices. The experiment platform comprises an injection pump, a glass injector, a long needle, a heating disc, experiment sheets, a thermocouple, an electric heating wire, temperature controllers, a weight sensor, a mass display, a sealed exhaust hood and other components.The flat plate temperature condition required for experiments is obtained in the electric heating manner, fuel is slowly dropped on a flat plate, experimental procedures and experimental conditions such as temperature conditions, time conditions, environment atmosphere and the like are flexibly set according to research backgrounds, and flat plate carbon deposition of the fuel under specific conditions is obtained. The temperature condition can be controlled in a larger range, and the carbon deposition problem of all types of fuel can be researched. The experiment platform is reasonable in design, simple in structure and applicable to optimization design of the experiment platform for carbon deposition and coking of the fuel.