The gravity variation before and after the Lijiang M_s7.0 earthquake that province occurred in Yunnan in 1996 is calculated by wavelet analysis method and the relationship between different wavelet transformation results and the earthquake is discussed. The conclusions are:① The first wavelet transformation results reflect the shallow layer material density variation in the earth from 1992 to 1993, from 1993 to 1994 and from 1994 to 1995, and there are anomalous gravity varia-tions near the earthquake area before the earthquake. Especially. the gravity variation is very clear during the earthquake from 1995 to 1996.② Although the second and third wavelet transforma-tion results of gravity variation according with the deep layer material density change of the earth have some variations during the earthquake, they are all not obvious The reason may be that the Lijiang M_s7.0 earthquake occurred in the shallow layer of the earth crust (10 km).