Debugging system for embedded system

The utility model discloses a debugging system for an embedded system. The system comprises a control host, a debugging circuit and the embedded system, wherein the embedded system comprises a bus, a debugging interface, a debugging mode register, a debugging mode control module, a flash memory, a random access memory and a controller. According to the debugging system for the embedded system, the downloading speed of a program file to be debugged in a debugging process is increased, and the service life of the debugging system is prolonged.