The embodiments of the present application provide a wireless communication method and device, which can distinguish between secret keys used for data packets, so that a receiving end and a data packet transmitting end use the same secret key to process the same data packet. Said method comprises: by means of a first protocol stack, processing a transmitted first data packet by using a first secret key; and by means of a second protocol stack, processing a transmitted second data packet by using a second secret key, the first protocol stack and the second protocol stack sharing at least one protocol layer.