The invention relates to a V-shaped easily-torn knife edge blister packaging box and a packaging and unpackaging method thereof. The V-shaped easily-torn knife edge blister packaging box comprises a front shell and a rear shell integrally formed with the front shell. The bottom of the front shell and the bottom of the rear shell are provided with a flexible connection strip, a rectangular movable cover plate is cut in the middle of the front shell through a cutting die, and the upper portion of the movable cover plate is provided with an easily-torn strip. The middle of the rear shell is provided with a storage groove. A cut which is cut by the cutting die comprises intermittent strip-shaped cut bodies, and a V-shaped connection point is arranged between every two adjacent strip-shaped cut bodies. The left of the easily-torn strip is provided with an easily-torn piece separated from the movable cover plate. The V-shaped easily-torn knife edge blister packaging box is reasonable in structural design, a V-shaped easily-torn knife edge made through a cutting die cutting technology replaces a traditional broken line type connection manner, and the connection strength is guaranteed while unpackaging of a plastic package is greatly facilitated; after the plastic package is unpackaged, the front shell cannot form residual prick points, scratches to a human are prevented, and meanwhile a good anti-fake function is achieved.