Greenhouse for cultivating plants

The invention relates to a greenhouse for cultivating plants. The greenhouse comprises a left side wall, a right side wall and a top cover arranged between the top of the left side wall and the top ofthe right side wall; a left movable cover and a right movable cover are arranged between the left top cover and the right top cover comprised by the top covers; the bottom of the left movable cover is connected with a single electric motor arranged on the left side wall through an L-shape driving rod, and the bottom of the right movable cover is connected with a single electric motor arranged onthe right side wall through an L-shape driving rod; the electric motors are connected with a circuit of a power supply through a controller; and the controller comprises an insulated shell, an input power supply wire, an output power supply wire, an energized plate, a left temperature sensing plate, a right temperature sensing plate, a left conducting plate and a right conducting plate. The greenhouse provided by the inven