A quick assembly blade for a ceiling fan includes a blade frame, a blade and a clamping member. The blade frame is fixed therein with at least three studs spaced apart equidistantly for a fastener to be respectively locked therein. The blade has one end bored with insert holes at the locations corresponding to the studs of the blade frame for the fasteners to be respectively inserted therethrough. The clamping member plate-shaped is secured on the blade at a location matching with the blade frame, having one end cut with two engage notches corresponding to two adjacent fasteners below and the other end provided with an elastic engage portion. The clamping member can be quickly pressed and fixed on the blade by means of its engage notches and its elastic engage portion to enable the blade to be assembled on the blade frame quickly and stably.