Abstract: An improvement of a multi-speed bicycle sprocket, in which the number of teeth of a tenth sprocket of a rear sprocket assembly is increased to obtain a more laborsaving effect without significantly changing a multi-speed bicycle chain and a rear derailleur. The number of teeth of the tenth sprocket with the maximum outer diameter is increased from 27 teeth to 28 or more than 28 teeth. Preferably, the tenth sprocket has 32 teeth. Therefore, the speed ratio of the tenth sprocket of the rear sprocket assembly to a front sprocket assembly approximates to 1:1 so that a rider or a player may ride the bicycle and/or ride the bicycle uphill in a more laborsaving manner.