The present disclosure discloses a new dual-drum projection lamp provided with a housing. A first projection mechanism and a second projection mechanism located on one side of the first projection mechanism are arranged in the housing. A transmission mechanism is further arranged in the housing. The transmission mechanism is configured to link the first projection mechanism and the second projection mechanism to enable the first projection mechanism and the second projection mechanism to rotate simultaneously, or the transmission mechanism is configured to respectively drive the first projection mechanism or the second projection mechanism to rotate. The present disclosure has the beneficial effects that by adopting a new transmission mode, a transmission structure is simpler. In addition, the new transmission mode can be implemented only by a single motor, so that the production cost is reduced, and the fault rate is also reduced.