An interlayer video decoding method is provided. The interlayer video decoding method includes determining a disparity vector for performing inter layer prediction on a second layer current block with reference to a first layer image; determining a first layer reference location corresponding to the determined disparity vector in relation to a location of the second layer current block; obtaining motion information of at least one peripheral block located in the periphery of the first layer reference location; and adding at least one motion information of the obtained motion information to a candidate list for inter prediction.