A lawn mower (100) includes a cutting element (1) for cutting grass, a motor (2) for driving the cutting element to rotate, a housing (10) for containing the motor and a handle device (20) for a user to control the lawn mower. The handle device includes a handle (21) including a gripping portion (211) for the user to grip and a connection portion (212) substantially extending along a direction of a first line (101), and a first operating element for the user to operate (22). The first operating element is capable of rotating about a first axis relative to the handle. The first axis is substantially parallel to the first line.