The invention provides an adjustable bubble machine based on rotary smearing of a sweeping disc and relates to the technical field of children toys. The adjustable bubble machine based on rotary smearing of the sweeping disc comprises a shell, a button is fixedly connected to the bottom of the shell through a spring, a saw blade is fixedly mounted at the left end of the button, a gear is rotationally connected above the saw blade inside the shell, inner pawls are rotationally connected inside the gear, and a belt pulley is rotationally connected to the center of the gear. According to the adjustable bubble machine based on rotary smearing of the sweeping disc, rotation of fan blades and the sweeping disc is achieved through manual pressing of the button, the use of power components is avoided, the power is more energy-saving and effective, bubble liquid can be better coated on circular holes, the success rate of bubble film formation is improved, continuous bubbles are facilitated, thenumber of bubbles is greatly increased, the bubble size can be adjusted, and the interestingness of the bubble machine is improved.