Based on the study of existing technique, this paper analyses the feasibility of using RTDX in Embedded Software debugging. In order to validate it, experiment of using RTDX to transmit debug information from TMS320F2812 DSP to host is carried out. Experiment results prove that the RTDX can correctly transmit debug information from DSP to host in real-time, also provide basis for further researching on fault injection and verification.