Motor noise reduction structure for dust collector, and dust collector

A motor noise reduction structure for a dust collector, and the dust collector. The noise reduction structure comprises: a mounting portion, used for mounting a motor (2) on a dust collector; and elastic components (3), used for applying tension to the motor. One end of each elastic component is connected to the mounting portion, and the other end of the elastic component is connected to the motor. The tension can offset the gravity of the motor. The number of the elastic components is at least two. The elastic components are uniformly distributed at the circumference of the motor. An included angle of 10 to 85 degrees is formed between the direction of the tension and the horizontal plane. The mounting portion comprises a motor cover. The motor cover comprises an inner motor cover (4) and an outer motor cover (5). The inner motor cover and the outer motor cover form an accommodation space for accommodating the motor. The elastic components are connected to the outer motor cover or the inner motor cover. The lower portion of the motor is suspended in the motor cover. The elastic components are tension springs. By means of the motor noise reduction structure for a dust collector and the dust collector, a good motor noise reduction effect can be obtained.