Abstract: A computer aided method for calculating, valuating and appraising the value of artworks. The basic steps of the appraisal method include providing an appraisal structure of a multiplicity of "value-affecting" factors, where each factor is further divided into a plurality of levels each assigned a relative percentage rate, establishing a database of all known artworks of all known artists, including each artist's personal information, prior sales information and individual circumstances that also affect the prices of the artist's artworks, creating an imaginary "normal" artwork by each artist which has a "normal" price and a "normal" point corresponding to each value-affecting factor, obtaining the information of a "target" artwork to be appraised, and calculating the appraised price of the "target" artwork based on the information of the target artwork and the "normal" price and "normal" points of the same artist's "normal" artwork.