RT-Thread is an embedded real-time operating system.It is popular among embedded developers because of its easy portability and good tailoring.The BL602 chip contains a 32-bit RISC-V architecture microprocessor.BL602 chip not only has high performance,but also has the characteristics of ultra-low power consumption.However,there is no mature scheme for porting RT-Thread real-time operating system to BL602 chip.In view of this phenomenon,a detailed scheme to migrate RT-Thread to BL602 chip is presented.Migration is done by tailoring the source code,modifying the configuration file, changing the system clock,adding serial port output,and using polling or interrupt callbacks to implement serial port input.The experiment results show that the RT-Thread operating system ported to BL602 can run normally and it has a series of functions such as task management and task scheduling.The migration scheme proposed in this paper not only reduces the difficulty of BL602 development,but also improves the CPU utilization.It also provides a reference for other RTOS porting.