Abstract: Double arch construction tunnel, because of its smooth linear, construction area is not large, can be very good to avoid the karst cave bridge divided situation and convenient connection point, so it is widely used in karst cave construction in many mountainous areas. With the construction and development of various roads and mountains, many areas to carry out tunnel construction in karst areas. At present, the construction of double double-arch tunnel is relatively rare in our country. Based on this, this paper studies the construction technology of double double-arch tunnel and analyzes some karst cave technology to be dealt with in the construction process of this technology, in order to provide reference and reference for the future construction enterprises or construction parties when dealing with the problem of double double-arch tunnel.