The invention discloses a synthetic diamond heating and power-regulating device, and the device comprises a control system, a monitoring host and at least one heating and power-regulating apparatus, wherein each heating and power-regulating apparatus is connected with the monitoring host through a communication module; the control system comprises a processor and a key module, a temperature measuring module and an electric energy control module which are connected with an input end of the processor, an output end of the processor is connected with a pressure regulating controller and an alarm apparatus, the monitoring host is used for receiving the temperature measurements sent by the processor and displaying the measurements on a display screen connected with the monitoring host, so as to remotely monitor whether each heating and power-regulating apparatus works well. The temperature measuring module arranged by the device provided by the invention can measure and display the temperature of the synthetic diamond during a synthetic process in real time, so that the processing of the synthetic diamond is more accurate than before; one monitoring host can remotely control a plurality of heating and power-regulating apparatuses at the same time, so that the processing efficiency of the synthetic diamond is effectively improved, and the intelligent degree is high.