Provided is a fishing reel having a pinion support structure. The fishing reel is configured such that a spool shaft and a pinion are spaced apart from each other without being in contact with each other, so that it is possible to prevent reduction in casting distance and noise generation during casting due to friction between the spool shaft and the pinion. The fishing reel includes: a spool shaft provided such that opposite ends thereof are mounted axially between opposite side covers, and including a main shaft and a pinion shaft; and a clutch means fitted over the pinion shaft and moved forward and backward in a longitudinal direction of the pinion shaft, and including a pinion which is provided with a stopper at a second end portion to be engaged with the fastening pin.