The invention belongs to the technical field of door locks and particularly relates to a door lock based on clutches. The door lock comprises a first lock hole, a mounting cavity, handle holes, firsthinge grooves, a second lock hole, second hinge grooves, a clamping block, first guide rails, second guide rails, driving circular rings, a driving shaft, reset springs, a third guide rail, a limitingcircular disc, a guide rail support, a guide rail groove, magnetic guide rail columns, a U-shaped opening, handles, the clutches, clutch supports, a door body, hinges and a door frame. People locatedoutside rotate the handles when opening the lock, the handles rotate to enable the magnetic guide rail columns to swing around the guide rail groove, and the clamping block is driven to move away from the second lock hole accordingly; when the magnetic guide rail columns move to the linear section of a fourth arc-shaped guide rail, the clamping block exactly moves out of the second lock hole, andat the moment, a door is opened; and when the magnetic guide rail columns move out of the fourth arc-shaped guide rail, the first guide rails are pulled to the original positions under the effect ofpulling force of two return springs.