From the eyes of information asymmetry phenomenon in the agricultural technology equity market. Through analogy the different types of agricultural technology users and combine with examples to analyze the behavior of the main logic of the transaction, and on this basis, explored the different types of agricultural technology users in conditions of adverse selection determine the transaction price under the contract, revealed the different types of agricultural technology user transaction price contract design and selection, the final choice from the reverse angle to make some workable recommendations for the development of agricultural technology property rights trading market.