The changes of elecrical resistance (R) were stuied experimentally in the process of CH4 hydrate formation and deomposition,uing temperature and pressure as the auxiliary detecting methods simultaneously。The experiment results show that Rimcreases with hydrate formation and decreases with hydrate decompositon.R is more semsiive o hydrate formation and decompositon than temperature or pressure,which indicates that the detection of R will be and effective means for detecting natural gas hydrate(NGE)quantitatively.