A control method of a dual-drum washing machine, comprising the following steps: step S1: before a first washing drum (1) performing heating; step S2: determining whether a second washing drum (2) is heating; step S3: if the determination result is yes, determining whether the remaining heating time of the second washing drum (2) is more than T 0 ; and step S4: if the determination result is yes, performing an alternate heating procedure in which the first washing drum (1) and the second washing drum (2) heat alternately, and if the determination result is no, performing a sequential heating procedure in which the second washing drum (2) heats before the first washing drum (1), wherein T 0 is a time value, set through a system, for determining whether heating of the second washing drum (2) is coming to an end. In the present disclosure, heating of the dual-drum washing machine is implemented in such a manner that the sequential heating procedure and the alternate heating procedure are combined, and the corresponding heating procedure is selected by determining whether heating of the drum in the present heating procedure is coming to an end, so that the appropriate heating procedure can be selected according to actual heating condition in the present disclosure, and thus the heating efficiency is higher, and the power control is more accurate.