The invention provides a fishing reel part, in which the longitudinal length of the attaching or detaching structure is shortened. The spool main body of the fishing reel part has a penetrated hole through which a spool shaft passes, and a mounting space formed on an end face through which the spool shaft passes. A spring member is a member having a pair of engaging portions mounted in the mounting space. A lid member is a member fixed to the spool main body in a state for covering the mounting space. The push button is mounted on the lip member, has a push operation portion, and a pair of tapered portions, and releases the engagement of the circular groove of the shaft member with the spring member by the pushing operation of the push operation portion. The spring members are arranged between the lid members. The bsaring includes a pair of first through holes being configured for one of the tapered portions to pass therethrough.