The invention discloses a cobalt-chromium alloy artificial tooth and a preparation method thereof. The preparation method comprises the following steps: step A, mixing cobalt-chromium alloy powder and a bonding agent according to a weight percentage ratio of (97-99%):(1-3%), and carrying out ball milling to obtain mixed powder; step B, pouring the mixed powder into a mould, and then carrying out a dry pressing treatment to obtain a primary blank; step C, digitally carving the primary blank and then carrying out a sintering treatment to obtain the cobalt-chromium alloy artificial tooth. Compared with the conventional technology, the steps of wax mould manufacturing and pre-sintering are eliminated, the cobalt-chromium powder is directly dry-pressed; moreover, a digital carving technology is adopted, a large amount of manpower and material resources is saved, and the production efficiency is greatly improved.