The invention discloses a process of utilizing Fructus chebulae pigment to dye silk fabric. The process includes: adopting a pre-mordant dyeing process, an simultaneous-mordant dyeing process or a post-mordant dyeing process to dye the silk fabric. A pre-mordant dyeing mordant is stannous chloride, calcium chloride, cerium chloride, lanthanum chloride or aluminum sulfate, and the pre-mordant dyeing process includes: pre-mordant treatment, dyeing and aftertreatment; a simultaneous-mordant dyeing mordant is calcium chloride, and the simultaneous-mordant dyeing process includes: dyeing and aftertreatment; a post-mordant dyeing mordant is stannous chloride, cerium chloride, lanthanum chloride or aluminum sulfate, and the post-mordant dyeing process includes: dyeing, post-mordant treatment and aftertreatment. The mordants which are environment-friendly are used, so that the silk fabric dyed by the Fructus chebulae pigment meets requirements of people on environment protection and physical health, a dyed product is soft in color and luster and high in color fastness, and color of the dyed product can be enriched by using different mordants. Dyeing with the Fructus chebulae pigment can give the fabric a certain healthcare function and good ultraviolet-resistant performance.