The invention discloses a method for simulating a tunnel excavation model test and tools adopted in the method. The method comprises the steps of assembling a tunnel model and simulating the excavation process. In the tunnel model assembling process, a tunnel section setting plate is machined first according to the shape of a tunnel, then a tubular column with a core is inserted in each fixing groove of the tunnel section setting plate, the tubular columns with cores constitute a transverse bunch in the shape same as that of a tunnel section, the end, provided with a second groove, of the inner core of one tubular column protrudes out of an outer tube for a certain length so as to form a cavity in the other end of the outer tube, the inner core of another adjacent tubular column is inserted into the cavity, in this way, a predetermined length of the tunnel is realized through splicing. By the adoption of the method, multiple tunnel excavation methods can be simulated precisely, and more instructive test results can be obtained. Furthermore, the method is economical, convenient and safe.