The urban 6track tunnels (local 7track) in Shijiazhuang are different from other tunnels; their scale and complexity are unique in China. During the design and construction of the mentioned tunnels, a series of works, i.e. study demonstration, theoretical calculation, numerical analysis, construction scheme comparison and contrast, field testing and technical breakthrough, have been done so as to guarantee the safe construction of the tunnels. In the end, the safe construction of longdistance multiple arch tunnel is guaranteed; and a series of construction technologies, such as retaining of large foundation pit in soft strata, protection of beltshaped foundation pit adjacent to existing railway line, protection of multiple archtunnel crossing underneath running railway and construction of multiple archtunnel crossing underneath arterial road, and key research results of passengerdedicated railway crossing urban area are obtained.