Abstract：Strain tidal observation data at Macheng station from 2001 to 2010 were applied to conduct a comprehensive quality assessment and longterm stability. Results showed that strain tide observation data of Macheng station during 10 years were continuous, complete, reliable and equipments kept stable. Data integrity rate was high, zero drift of years and annual variation were small, precision of strain tide observation was high and the relatively noise level was low. Five evaluation indicators had reached the domestic leading level that were data continuous rate, zero drift of years, annual variation, tide factor of M2 wave, and relative error and noise level. The results could provide longterm and reliable data for geodynamics, and also provide a reference instance for the variation information of solid tidal background and identification on precursory anomalies.
