The heating system of tribological test equipment for piston ringcylinder liner was designed.The tribological test will approach the true internal combustion engine circumstance by the heating system.The instantaneous heat analysis based on FEM model indicates that the heating belt could make the test cylinder liner be heated welldistributed when it is used as heating source and compared with electric heater piece,and the flexibility of the heating belt also makes it be easy applied to the liner surface which possesses some shape.The steady heat analysis based on FEM model indicates that the heat loss of heating belt should be thought of in design of heating system.The temperature control and general plan of the heating system were devised.The heating system is able to provide better technical support to the tribological characteristic test of piston ringcylinder liner.