The invention discloses row chain disassembling, assembling and washing equipment and a disassembling and washing method thereof and relates to the technical field of engineering machinery. The technical problem that an upper row chain and a lower row chain cannot be disassembled at the same time in the prior art is solved. The row chain disassembling, assembling and washing equipment comprises a disassembling mechanism and a power mechanism, wherein the power mechanism is in driving connection with the disassembling mechanism and can drive the disassembling mechanism to conduct disassembling operation on at least two row chains located at different position heights in a pulling mode. The disassembling and washing method of the row chain disassembling, assembling and washing equipment comprises the steps that one, two or more row chains are driven to enter the predetermined washing position; the row chains are subjected to soaking or spray washing with washing fluid; the row chains are subjected to washing and blowing through air flow; and the one, two or more chains are driven to drop out of the predetermined washing position and enter a preparation assembling position. The row chain disassembling, assembling and washing equipment and the disassembling and washing method thereof are used for disassembling and washing the upper row chains and the lower row chains.