A multifunctional movable beam formwork comprises a bottom formwork, side formworks, end formworks and limiting rods, and the bottom formwork comprises end unit bodies a and b and unit bodies with thelengths of 300 mm, 600 mm and 1200 mm; each side mold comprises unit bodies with three length sizes of 300mm, 600mm and 1200mm, and a channel steel-shaped connecting piece is arranged on the outer surface of each side mold; the end die has four width sizes of 112 mm, 132 mm, 162 mm and 212 mm, and a channel steel-shaped connecting piece is also arranged on the outer surface of the end die; the limiting rods are used for fixing the relative positions between the side molds and between the side molds and the end molds; each assembly is provided with an inner screw hole as required; and the channel-steel-shaped connecting piece is formed by welding channel steel and an upper end plate with a screw hole. The utility model solves the technical problem that the beam template in the prior art cannot be flexibly assembled and disassembled to adjust the size, and adapts to the size of the experimental beam in colleges and universities.