Abstract: Traditional evaluation method of heat pipe heat transfer performance is to compare the equivalent heat conduction coefficient (effective heat conduction coefficient,equivalent weight heat conduction coefficient,etc.),whose shortage is mixing the geometrical factors with heat transfer factors to evaluate heat conduction performance.Therefore,it is proposed here to use equivalent convection heat transfer coefficient for evaluating heat pipe performance.The equivalent convection heat transfer coefficient objectively describes the comprehensive heat transfer ability of heat pipes,the value of which can be the standard of judging the heat transfer performance of heat pipe.Besides,the corresponding theoretical model is established so that the evaluation is more perfect and reasonable.