Studies on the current rural "three changes" focus more on the interpretation of policy instead of on the legal risks the three changes might incur. This paper aims to broaden research area of rural "three changes". Through comparative studies on laws and regulations, and national policies, the issue of corporate prevention of legal risks from the "three changes" is studied. The study found that the corporate law is relatively broad and empty, but the entry is single; the cooperative law allows little space for adjustment, involves low risk and low cost, but it is not very effective; land contract law, property law and other regulations are more stringent, and allow for little leeway, posing some legal risks for both farmers and companies. With respect to the possible legal risks, this paper proposes the following preventative solutions: first, the "three changes" should be covered as far as possible by the adjusted corporate law; farmers should be rid of the mentality of reliance on the government and raise their awareness of law, striving to be the major player in the "three changes"; corporations should actively participate in the "three changes" and deepen their understanding of the corporate law, aiming to be the mainstay of "three changes"; government should redefine its role and strengthen the design of legal system, ending up a dominant player in the "three changes".