The invention relates to a vehicle information security evaluation method, and belongs to the field of network security. The method can evaluate a vehicle information defense scheme, give an evaluation result for a single attack and give a comprehensive evaluation. The method can also evaluate different defense schemes, test defense scheme of a certain function and test the overall defense scheme. The method comprises the following steps of establishing connection between a vehicle network information security defense system, an invasion detection system and an evaluation system, setting a timer to wait for the protection result of the defense system, giving a single attack evaluation result and relatively big threat attack statistics, repeating the second step unit all the attacks end and giving a prompt of whether to give an overall assessment. The advantages are that evaluation of the vehicle information security defense scheme can be evaluated; prompt and statistic analysis of relatively big threat attacks can be given; evaluation parameters can be dynamical adjusted in order to satisfy continuous development of attack means.