We are currently in the actual circumstances to be lost as 30 percents our country leakage. A surrounding environment of the water pipe was infected, and increased quality of water pollution phenomenon in conduit pipe by water leakage. And, by water leakage, caused huge economical damage. Is ceilinged in leakage of water detection to using leakage of water detection method in our country now. As well as can not search correct position even if water leakage happens, because leakage of water detection is impossible by real time. In this paper we solved difficult of existent product and difficulty of existent monitoring system and maintenance through research of leakage sensing monitoring system S/W design in leakage sensing system. And, at the same time, we simulated leakage sensing monitoring system and implemented of S/W design.