A floor washing machine (100), comprising a machine main body (110), a handle (120) and a floor brush assembly (1). The floor brush assembly (1) comprises: a housing (15) having a front end and a rear end, a first rolling brush (11) being arranged at the front end of the housing (15), and a second rolling brush (12) being arranged at the rear end of the housing (15); and an electric motor (13) and two transmission mechanisms, the two transmission mechanisms respectively driving the two rolling brushes (11, 12) to work, the first rolling brush (11) having a first rotation speed, the second rolling brush (12) having a second rotation speed, and the first rotation speed being greater than the second rotation speed.