Disclosed are a sulfone polymer composition and a thermoplastic molding composition consisting of same and a use thereof. The sulfone polymer composition comprises: (A) an aromatic sulfone polymer, and (B) at least one microcomponent selected from the following structures; I: sulfolenes, II: sulfolanes or thiophene sulfones containing a hydroxy substituent or an aliphatic branched chain substituent, III: dimethyl-substituted quinolines, IV: trimethyl-substituted quinoline substances, and V: sulfonic acid or sulfuric acid lactone substances, wherein, on the basis of total weight of the sulfone polymer composition, the content of the total weight of the microcomponents is less than or equal to 1000 ppm, and the content of the total weight of the micro components is not equal to 0. The microcomponents with a specific structure are added to the sulfone polymer, the content of the total weight of the microcomponents is controlled, the yellowness index of the obtained sulfone polymer composition is less than 5, and the color level is remarkably improved.