The invention discloses a driving direction regulating method and device, relates to automatic navigation technology, and aims to solve a waste of land resources due to a long direction regulating distance in the prior art. The method comprises steps of starting a forward automatic driving function after a farming machine turns at the end of a farm and acquiring a forward position and direction information in real time; comparing the forward position with a pre-stored operation locus to obtain a first comparative result; regulating the motion locus of the forward automatic driving according to the operation locus if the first comparative result is greater than a preset direction regulating error threshold; stopping the forward automatic driving function and starting a backward automatic driving function to achieve automatic driving if the first comparative result is less than the preset direction regulating error threshold; and restarting the forward automatic driving function after the farming machine returns to the end of the farm and starting an operation mode. The driving direction regulating method and device can be used in agriculture and forestry operation to achieve rapid driving direction regulation.