A method of assembling segments and a receiving end are provided. The method includes: determining, in the case that the receiving end receives a target data packet at a RLC layer, whether the target data packet is a segment of a RLC data packet based on a header of the target data packet; arranging the segment of the RLC data packet received by the receiving end, in the case that the target data packet is the segment of the RLC data packet; assembling, in the case that the receiving end receives all segments of the RLC data packet, all segments of the RLC data packet to obtain the RLC data packet; and delivering the RLC data packet to a PDCP layer.