The invention discloses an air supply component. The air supply component comprises an air guide ring and an axial-flow wind wheel; the air guide ring comprises a first air guide ring and a second air guide ring which are arranged coaxially; an air inlet is formed by the first air guide ring; the first air guide ring is bent with the first radius in the direction away from the axis; the second air guide ring is bent with the second radius in the direction away from the axis; the first radius is larger than the second radius; the axial-flow wind wheel comprises multiple blades; each blade comprises a blade back edge formed at the leeward end of the blade, a first notch and a second notch are formed in the blade back edge, and the second notch is deeper than the first notch; the axial-flow wind wheel extends into the air guide ring via the air inlet; the ratio of the depth that the axial-flow wind wheel extends into the air guide ring to the axial height of the air guide ring is 0.3-0.4; and each second notch partially extends into the air guide ring. The invention further discloses an air conditioner. According to the air supply component, noise of the air supply component during working is reduced by the aid of the first notches and the second notches, and the air supply quantity can be increased by setting the position relation between the axial-flow wind wheel and the air guide ring.