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Strong lunar crustal magnetic anomaly interacts with upstream solar wind and amini-magnetosphere is formed above the dayside magnetic anomaly[Halekas,et al.,2008].2.5-DMHD simulation carried out by Harnett and Winglee[2003] indicated that lunar magnetic anomalycan deflect and decelerate upstream solar wind near mini-magnetosphere.“Chang’E-1” and“Chang’E-2” lunar spacecraft was launched successfully in October x,2007,and October y,2010,and inserted into polar circular orbit with altitude of 200km,and 100km,respectively.DuringDecember 02—12,2010,CE-2 was operated in the phase of orbit plane near the Sun-Moon line,and the Solar Wind Ion Detector (SWID) on the spacecraft,observed the upstream solar windvelocity and temperature at altitude of 100km above the lunar surface.SWID covered a largerange of lunar longitude from 100°—260°,and the solar wind velocity observed by CE-2 at 100kmaltitude were decelerated by the downstream crustal magnetic anomaly.The solar wind velocitydeceleration distribution with lunar longitude near lunar equator was presented in this study,andcompared with lunar crustal magnetic anomaly distribution.We found that lunar surface crustalmagnetic anomaly is the main obstacle to decelerate the solar wind at 100km above even at lowlatitude regions.If so,these likely represent the first such observations of solar wind decelerationat 100km altitude above lunar equator magnetic anomaly.