Abstract: The station and zone tunnel's corpus structures of No.1 line of Chengdu metro all locate in the sand and pebble soil.Will meet many construction geologies and the environment geology problem in the construction, for example, big diameter, high strength gravel and the anastigmatic body sand will produce the bigger influence to choose the type of shield machine, construction of shield and the groundwater decline.At the same time, the metro engineering construction may produce the influence to the peripheral building and the groundwater path. But at full summary the technique and the experience of similar engineering in the foundations,from choose the reasonable construction method, construction equipments, construction craft, construction organization and engineering measure, can be solve or control above-mentioned geology problems.