The invention provides an insect sticking plate insect pest automatic monitoring device based on a mobile phone. The device comprises the monitoring mobile phone, an intelligent control box, a solar cell panel, an insect sticking plate, a distribution box, and a solar cell panel bracket, an insect sticking plate bracket and a distribution box bracket which are used for fixing the device, the monitoring mobile phone is placed in the intelligent control box, the intelligent control box is placed in the solar cell panel bracket, and a semiconductor chilling plate and a temperature control switchare arranged in the intelligent control box. The device is used for automatically controlling the temperature in the intelligent control box, a single-chip microcomputer, a transformer, a Bluetooth module and a relay are further arranged in the intelligent control box and used for automatically charging the monitoring mobile phone, and the monitoring mobile phone shoots an insect sticking plate image through a shooting hole in the side face of the intelligent control box and sends the image to a server through a wireless network. The automatic monitoring device provided by the invention can solve the problem that an automatic monitoring system cannot stably operate for a long time due to the fact that the monitoring mobile phone is overheated or overcharged.