The utility model discloses a location mould for tunnel bow member is connected, including the clamping part that is used for centre gripping shaped steel and the connecting portion that are connectedto the base, connecting portion are fixed on the clamping part, and connecting portion have a plurality of bolt, and the section of clamping part be the U -shaped, and the clamping part includes first connecting plate and be in the second connecting plate of the first connecting plate left and right sides, the nut outside of bolt and two second connecting plates towards the base on one side of the terminal surface parallel and level and form a plurality of strong points. The location mould can be processed in advance, the clamping part can the centre gripping shaped steel, can slide on adaptability ground on shaped steel, the location mould can be conveniently inserts direct positioning in the base, last welding type steel, location mould and base to the bolt, location mould processing issimple, and convenient operation uses not restricted by traditional place, and nos welding deformation makes positioning accuracy high, the production efficiency height. This utility model is used for the auxiliary connection part field.