The standard contract has a clear limit to the means by which it can be considered as a means of achieving it, even if it is essential to the contracting party. This is because standard contracts are merely an example of recommending certain contents to trading partners, so whether or not to use them is reserved entirely by the parties choice, and there is no legal disadvantage even if they are rejected. Therefore, if the standard contract can not replace the legislative function, it is necessary to intervene in the contents of the contract between the signers in order to achieve the fair purpose of forming the rights relation of both parties, The discussion of the dimension should follow. The standard contract should help to promote the interests of both parties within the limits that all the parties to the contract can not exceed the acceptable category, and it should be the most incentive for the parties to use it to be their own benefit, It means that it is essential to be fully involved in the adjustment of relevant interests. In addition, it should be noted that it is necessary to stipulate important legal relations between the parties to prevent conflicts in advance, to clarify the evidence relation, to faithfully include the legal functions as disposal documents, The ability to identify and guide relationships is also an incidental consideration.