Abstract: A sharp drop appeared in a deep well water level in Xi'an Film Studio from March to April1998.Through the repeated research,it is discovered that it was caused by pumping water from another deep well near the well in the Xi'an Film Studio,and the pumping water experiments in that well verifies the hypothesis.It provides us an observational case in situ for the inference of pumping water to observational water level, and is also useful to judge which is the precursory anomaly and pumping water influence in deep well water observation.It is also useful to exploit and use the deep well with hot water.

Key words: Aseismic anomaly, Pumping water influence, Hot water well in Xi'an Film studio