Power tool and switch device thereof

A power tool, comprising:

• a housing;
• a motor, arranged in the housing;
• a slider, movably arranged on the housing;
• a magnetic component, arranged on the slider and configured to generated a magnetic field, wherein the magnetic component is driven by the slider to move along a power-off path and a power-on path connected with each other;
• a trigger, arranged in the housing and configured to be pressed by the slider;
• and
• a control module, arranged in the housing and electrically connected to the trigger and the motor, comprising a magnetic sensor disposed corresponding to the magnetic component and configured to generate a position signal according to a position of the magnetic component in the magnetic field;
• wherein, when the magnetic component is located on the power-off path, the control module and the motor are turned off;
• wherein, when the magnetic component is moved from the power-off path to the power-on path, the slider triggers the trigger to activate the control module;
• wherein, when the magnetic component is located on the power-on path, the control module outputs a control signal to the motor according to the position signal, and controls the motor to an operating state correspondingly.