Abstract: Continuous ground tilt observation is important in crustal deformation studies. The new BSQ model digital vertical pendulum tilt meter installed at Jinhe observation station in Deyang city, Sichuan Province caught abnormal ground deformation obviously before the Wenchuan 8.0 earthquake. According to the observation results, beginning from half a month before the earthquake, the ground tilt rates at the Jinhe station became tens of times stronger compared to that of before, and the tilt direction was about NW 25°. Besides, the BSQ model tilt meter here also got relatively complete information about stress accumulation and release before and during the earthquake process. It provided important information for studying strong earthquake process. The article also introduced the observation results from other kinds of tilt meters before the Wenchuan earthquake installed near the Longmenshan fault. This research proved that the BSQ model digital tilt meter can get more useful information about the deformation of ground surface, and worthy to be popularized.