A mobile robot. The mobile robot comprises a robot housing (10), two moving components (40), a container apparatus (20), and a cleaning component (50); the moving components are mounted on the robot housing for moving the mobile robot; the cleaning component comprises a main brush (520) provided laterally relative to a normal forward direction (f) of the mobile robot; the main brush is mounted on the robot housing and at or near a part of the robot housing, at which position a transverse width is largest; extension of the main brush in a direction perpendicular to the normal forward direction of the mobile robot is not interfered with by the moving components. The mobile robot has a larger main brush width, and thus the working width of the mobile robot is increased.