Mouse blocking device

The utility model discloses a mouse blocking device which is made of materials with certain rigidity but capable of bending forming, such as sheet iron or metal nets. The mouse blocking device is made of a body in a rolling mode, a lateral side of the body is provide with a gap or a notch, so that a plurality of petal blades which can be folded relative to the body are formed on the lateral side, and the petal blades can be folded inwards or outwards relative to the rolled body. When the mouse blocking device is used, the body rotates in 360 degrees with a circuit and pipeline channel axis as an axial center, the petal blades blocks circuit and pipeline cross sections. The mouse blocking device is easy to manufacture, suitable for quantity production, convenient and rapid to install and use, capable of being dismounted for a plurality of times and being repeatedly used, suitable for not only a channel on a wall but also a channel on a metal sheet, and capable of being used regardless of the size and shape of