Universal agricultural machinery on-board terminal

The utility model relates to a universal agricultural machinery on-board terminal which comprises a main box body; a touching screen is bonded on one side of the surface of a liquid crystal screen and is fixed on the main box body, the surface of the main box body is provided with a through hole of a display screen, the liquid crystal screen and the touching screen are exposed in the through hole of the display screen, and the other side of the liquid crystal screen is provided with a supporting board. A main board, a power module and a keyboard module are fixed on the supporting board, and the outer side of the supporting board is provided with a lower box body which is buckled with the main box body. The liquid crystal screen is connected with a liquid crystal screen interface on the main board through a cable, the touching screen is connected with a USB interface on the main board through a touching screen controller, the power module is connected with the main board, the main board is externally connected with a variable working controller and a GPS device, and the output of the GPS device is connected with the input of the variable working controller. The universal agricultural machinery on-board terminal adopts an embedded main board, an integral LCD, a touching screen and a membrane keyboard, has good openness and expandability, and can meet the requirements for information acquisition, data storage and working process supervisory control in the variable working process in precision agriculture fields.