Abstract: It is an urgent subject to improve the pesticide applying techniques and develop new sprayers. That the techniques of pesticide application cannot catch up with the development of pesticide is a key reason of resulting in ineffective use of pesticide. As the amount of pesticide used in fields or orchards keeps growing rapidly these a few decades, problems are coming with the environmental pollution, the resistance of pests to pesticide and the decrease of natural enemies, which unavoidably lead people to face the danger of destroying the balance of the agroecosystem. All these signs remind people to take impressing actions to control the use of pesticide to a reasonable extent. 