The invention provides a main control unit for a blade-type gateway, and belongs to the technical field of communication equipment. The main control unit is integrated on a main control board, can operate a Linux system based on an ARM inner core, and comprises a main connector unit which is connected with a power management unit and a main controller unit. The main controller unit comprises a power interface module which is connected with a power management unit; a communication interface module which is connected with the main controller unit; an Ethernet interface unit which is connected with the main controller unit; a program testing interface unit which is connected with the main controller unit; a power management unit; a main controller unit which is used for processing the data transmitted by the interface unit; and a storage unit which is connected with the main controller unit. The main control unit is small in size, is compact and flexible, is convenient to use, enables a system to be programmable through the setting of the program testing interface, has the flexible interface type support, achieves the maximum utilization of the hardware resources, and is suitable for different hardware function demands.