The invention relates to a motorcycle component surface spraying system comprising a spraying system; bearing seats are installed on two side walls of the spraying system; a stirring processing mechanism is installed between the two bearing seats; multiple stirring blades are installed on the stirring processing mechanism; a stirring system and a spraying material grinding system are respectively installed at the upper left and the upper right of the spraying system; a driving power mechanism is installed at the upper part of the right side wall of the spraying material grinding system; a rotating mechanism support is installed between the stirring system and the spraying material grinding system; a rotating mechanism is installed on the rotating mechanism support; a spiral stirring blade is installed on the rotating mechanism; a grinding plate is installed on the stirring processing mechanism; a grinding wheel shaft is installed under the grinding plate; a grinding wheel is installed on the grinding wheel shaft. By means of the system of the invention, motorcycle components can be sprayed effectively; the effect of motorcycle component spraying is improved and the labor intensity of spraying is reduced.