Touch point locus tracking method and device based on fitting and intelligent equipment

The invention is applicable to the technical field of touch control, and provides a touch point locus tracking method and device based on fitting and intelligent equipment. The touch point locus tracking method comprises the steps of obtaining a touch area input by a user, and according to the touch area, determining a first touch point area where a start point is located and a second touch pointarea where the touch points adjacent to the start point are located; building a first new circle and a second new circle of the tangency point which is tangent to the first touch point area, and a third new circle and a fourth new circle of the tangency point which is tangent to the second touch point area, according to the second touch point area and the adjacent third touch point area, determining a fifth new circle and a sixth circle, doing the rest in the same manner until determining a (2N-1)th new circle and a 2Nth new circle of an end point touch area, fitting the first new circle to the (2N-1)th new circle, fi