In order to meet the demand of integrated development environment for self-developed chips,a set of integrated development environment scheme composed of Eclipse,GDB and OpenOCD is designed.Further,RAC102 chip of RISC-V architecture is selected as the debugging target.On the basis of driver adaptation and operating system simulation,GDB and OpenOCD are customized compiled,debugging and ported,and a cross-debugging system based on RISC-V architecture is realized.Finally,the GDB debugging command and the corresponding remote serial protocol are analyzed in the cross-debugging system implemented by this scheme,and the corresponding remote serial protocol packet set of each debugging command is explained in detail while verifying the functional correctness of the cross-debugging system.