Abstract: By Studying working section engineering instances of vacuum dewatering at Jinsong station re-entry line and Andingrnen-Beitucheng station interval in the first-stage construction of Beijing Metro 10th Line, the operating theory of vacuum deep well dewatering technology, and its performance, applicability, construction effectiveness is discussed. Through studying engineering instances, the new technology is proved to be effective, that could overcame the problem of complex stratum dewatering in the construction of underground and to fill up the blank of dewatering technology of underground construction in Beijing.