The invention provides a distribution box early warning system and relates to the technical field of electricity use safety. The system comprises a data collection device, a GPRS wireless sensing network device and a terminal device, wherein the GPRS wireless sensing network device is connected with the data collection device and the terminal device, the data collection device is used for collecting target data of a distribution box, the target data comprises at least one type of temperature data and current data, the GPRS wireless sensing network device is used for determining a transmissionscheme of the target data according to the quantity and the position of the data collection device and transmitting the target data to the terminal device based on the transmission scheme, and the terminal device is used for obtaining the target data, determining whether the target data exceed the preset threshold, generating the early warning information if the target data are determined to exceed the preset threshold, and processing the early warning information. The system is advantaged in that a technical problem of low transmission efficiency during data transmission existing in a distribution box early warning system in the prior art is solved.