The invention discloses a sleeve assembly and a wrench comprising the same. The sleeve assembly comprises a plurality of sleeves arranged in a nested mode, antiskid pieces, elastic reset mechanisms and locking maintaining mechanisms, wherein each sleeve comprises an outer sleeve body located outside and at least one inner sleeve body located in the outer sleeve body; an outer sleeve matching part is formed on the inner peripheral surface of each outer sleeve body; an inner sleeve matching part is formed on the inner peripheral surface of each inner sleeve body; every two adjacent sleeves can relatively slide in the axial direction; each antiskid piece is formed between every two adjacent sleeves; each elastic reset mechanism comprises a reset elastic piece and an abutting disc which are arranged in the corresponding outer sleeve body, and the abutting disc is located at the end, facing towards the corresponding inner sleeve body, of the reset elastic piece; each inner sleeve body abuts against the corresponding abutting disc; and each locking maintaining mechanism is arranged to be used for locking the corresponding elastic reset mechanism so that the axial position of the elastic reset mechanism relative to the corresponding outer sleeve body can be maintained. The sleeve assembly can be matched with nuts with various specifications by arranging the multiple sleeves, so that the universality of the sleeve assembly is good.