The invention discloses a ring main unit damp-proof temperature control system and method based on the GPRS. The ring main unit damp-proof temperature control system comprises a monitoring terminal, the monitoring terminal is installed on a ring main unit, can at least obtain temperature and humidity information and can generate driving instructions according to the temperature and humidity information and preset valve conditions, and the driving instructions can control a damp removing device of the ring main unit. The ring main unit damp-proof temperature control system further comprises a data concentrator and a monitoring center, the data concentrator can be in wireless communication connection with the monitoring terminal, the data concentrator and the monitoring center can be in communication connection through the GPRS so that the data concentrator can periodically obtain the temperature and humidity information of the ring main unit, send obtained data to the monitoring center according to instructions of the monitoring center and transfer the instructions sent by the monitoring center to the monitoring terminal, and the monitoring terminal carries out the instructions. A wireless communication technology and GPRS communication means are adopted to monitor the running environment of the outdoor ring main unit in real time, no person needs to be specially assigned for regular inspection of the ring main unit, the workload is reduced, the automation level is improved, potential safety hazards are reduced, and a device can run safely and stably.