The utility model discloses a switch board of latent oily charge pump, include: the switch board body, the switch board body is inside to be provided with control module and refrigerating plant, and control module is used for controlling refrigerating plant and refrigerates, refrigerating plant includes that rotary compressor, rotary compressor export and condenser entry pass through first pipe connection, and the export and the expansion valve of condenser are connected, and the expansion valve passes through the second pipe connection with the evaporimeter entry, and the evaporimeter export is connected with the check valve, and the check valve is connected with vapour and liquid separator, and vapour and liquid separator passes through third pipeline and rotary compressor's entry linkage. Through above setting, realize the control to switch board of latent oily charge pump's temperature to make switch board of latent oily charge pump work in predetermined temperature range, realize switch board of latent oily charge pump's normal work.