According to the operation mode, agricultural machinery can be divided into two categories: walking operation and fixed operation. In the agricultural machinery of walking, there are two kinds of continuous walking and intermittent walking in the course of continuous walking. In the fixed operation of agricultural machinery, there are in the non-operating state can move the location of the mobile and the location of the work is always fixed two types of non-mobile. According to the place of work, agricultural Machinery are classified into field operations (fields, pastures and orchards, etc.) , yard operations, indoor operations (plant houses, machine houses, warehouses, greenhouses and livestock houses, etc.) , water or water operations (rivers, channels, reservoirs and wells, etc.) , road operations and aviation operations.