Faults are inevitable in electronic circuits. Timely and rapid solutions to these faults are the key technologies that make electronic circuit reached the target performance. This thesis explores several causes of electronic circuit faults and the performance of circuits when faults occur. It also conducts a multi-perspective analysis, and proposes several fault detection technologies that are effective. The author points out that several things should be paid attention to when using the proposed detection technologies and a systematic analysis of the fault detection technologies of electronic circuit is carried out. A thorough analysis of fault detection technologies of electronic circuit will help technical staff to respond to faults of electronic circuit in a timely manner.