This paper first analyzes the definition of psychological capital and clarifies the mental capital and mental quality. Then this paper considers that it is necessary for freshmen to accumulate mental capital and points out four suggestions on how to carry out the entrance education for college freshmen by using the theory of psychological capital accumulation: forming a reasonable target to exploit the freshmen’s belief of “hope”, building a training platform to develop the awareness of "self-efficacy” for freshmen, creating a positive atmosphere so as to train attributive habit of "optimism" for college freshmen and carrying out the practice of " perseverance" to enhance freshmen’s ability to resist frustration.