The invention provides a data packet transmission method which is applied to network equipment, the network equipment is provided with a preset first cache region, and the first cache region is used for caching a data packet; the method comprises the steps that after a data packet is received, an attribute value of the data packet in the aspect of attribute is determined, and the target attributeis an attribute related to time delay; a sending priority of the data packet is determined in the first cache region according to the attribute value of the data packet; the data packet is stored intothe first cache region according to the sending priority of the data packet; wherein the data packets in the first cache region are sequentially sent out according to the sending priority. In addition, the invention further provides a data packet transmission method applied to the terminal equipment, network equipment, the terminal equipment, a storage medium and a computer program product.