The invention relates to a nitrendipine tablet and a preparation method thereof. The nitrendipine tablet comprises, by weight, 1 part of nitrendipine, 1.0 to 5.0 parts of polyvinylpyrrolidone, 0.05 to 0.25 parts of polyethylene glycol, 0.05 to 0.4 parts of hydroxypropyl methyl cellulose, and 0.5 to 2.0 parts of polysaccharide. The preparation method comprises the following steps of dissolving nitrendipine in a solvent, adding a part of auxiliary materials into the solution, fully mixing to obtain a homogeneous system, wherein nitrendipine is distributed in a molecular state or an amorphous state, and adding the rest of the auxiliary materials into the mixture to obtain the nitrendipine tablet. The nitrendipine tablet has high bioavailability and can be fully and easily absorbed by organisms after oral administration.