Focusing on the economic optimal dispatching of large scale farm parks, large farm parks are divided into farming area and living area according to load types, the power adjustable load model of the farming area and the time shiftable load model of the living area are established respectively, the different demand side response characteristics of the two types of loads are discussed in the sub scenario, and the conclusion that the two types of loads all participate in the demand side response is economically optimal is carried out. Considering that the room temperature of the farming area needs to be set within a certain range, when the temperature penalty coefficient is too large, the two types of loads that originally participated in the demand side response may have the only participation of the living area load, about the power adjust able load of the farming area, which is no longer involved into the demand side response. The above analysis conclusions are verified by numerical simulation. These conclusions can provide reference for the economic optimization scheduling and operation of large farm parks with demand side response.