Abstract: In order to the user can better understand and utilize ASME code, reducing the difficult in understanding the ASME code, the paper studies the differences and relations of the two codes, summarized regulations that can be inter-referenced between the two codes, and further analysed the availability in the testing work. Finding that the exposured technique specified in the ASME code are incomplete, mostly depending on the inspectors ability. However, the JB/T 4730 code is complete so that the inspector can better understand and correctly applied.