The utility model discloses an intelligent combined power supply system, relating to the field of electrics. The intelligent combined power supply system comprises a panel, a cabinet and a power switching circuit arranged in the cabinet, wherein the panel includes a monitoring module, a voltage regulation module and a charging output module; the charging output module is provided with a direct-current output; and the monitoring module, the voltage regulation module and the charging output module are detachably mounted on the panel. According to the utility model, the problems that the conventional power supply system has the disadvantages of large size, inflexibility in displacement and installation, requirement of large number of wires for on-site reconstruction, inconvenience in debugging and insecurity in live operation, causing difficulties in installation and maintenance and inconvenience in module displacement, are solved. Intelligent combined power supply system has the advantages of beautiful appearance, convenience in maintenance and operation, flexible screen combination and low cost, and overcomes the effects that the replacement of the complete set of direct-current power supply system is time-consuming and labor-consuming, and the cost is high.