A massage chair is an electronic device designed to simulate the techniques of a professional massage therapist to relax muscles, improve blood circulation, and reduce stress. It is commonly used in homes, spas, offices, and wellness centers. The chair is built with a sturdy frame and cushioned seating, and it contains internal components such as electric motors, rollers, airbags, vibration units, heating elements, and a control system (remote or digital panel). Advanced models may include body scanning technology, zero-gravity positioning, and multiple massage programs.

In operation, the user sits or reclines in the chair and selects a massage mode using the control panel or remote. The internal motors drive rollers that move along the back, mimicking massage techniques such as kneading, tapping, rolling, and shiatsu. Airbags located in areas like the arms, legs, and shoulders inflate and deflate rhythmically to apply pressure and improve circulation. Some chairs also provide heat therapy to relax muscles further. The intensity, speed, and massage areas can be adjusted according to user preference. Massage chairs are valued for providing convenient, consistent, and relaxing massage therapy without the need for a human masseuse.