The utility model provides a leakage detection terminal and system, the leakage detection terminal includes that the circuit articulates port, leakage detection module and data transmission module. The leakage detection system includes above -mentioned leakage detection terminal, is used for to receive leakage detection terminal Test and the merge of the electric leakage data of each node of uploading issue the server the concentrator and to the host computer of the electric leakage data of each node of analysis processes received. The utility model discloses each earth leakage protection point at current power supply network articulates the leakage detection terminal temporarily, with the concentrator, the host computer cooperation forms the leakage detection system, the electric leakage situation of each node of real -time supervision, under same platform district, the electric leakage data of each node are compiled the concentrator earlier with wired or wireless mode and are uploaded to the host computer again, the host computer analysis is by all electric leakage data of section between time measuring, can correctly judge the electric leakage security under this change, when the trouble takes place, can accurately confirm electric leakage position and electric leakage size, be favorable to fast troubleshooting effectively.