Disclosed is a tool for cutting fresh-keeping film, which is composed of a rectangle blade. One long side of the blade is zigzag type. On the sections three centimeters from each end to the middle, the saw teeth are formed into right triangle. The hypotenuse of the two parts of right triangle on the long side is symmetrical. The short side of both ends of the blade and the exterior margin of the connection section take a smoothly arc shape. The utility model sets up two saw teeth of right triangles on the long side of the tool with the hypotenuses paralleling with each other and the tooth point can easily pierce into the fresh-keeping film, resulting in that users can realize the same cutting effect by either left or right hands. Since the short side of both ends of the blade and the exterior margin of the connection section take a smoothly arc shape, injury on users' hands can be avoided.