A traveling path planning method of an automatic harvester, comprising: (a) detecting and forming, by a detection device, a basic farmland information of a farmland; and (b) receiving and analyzing, by a path planning device, the basic farmland information, and planning a traveling path of the automatic harvester according to the basic farmland information, wherein the basic farmland information comprises size, surface area, shape, coordinates, or crop category of the farmland; when the automatic harvester is driving, generating, by an obstacle driving detector, an obstacle information when an obstacle is detected, and sending the obstacle information to the path planning device; determining, by the path planning device, whether the automatic harvester stops, keeps driving, or re-plans another traveling path accordingly; characterized in that, the traveling path planning method further comprising: presetting, by a path setting module of the path planning device, a traveling mode of the automatic harvester based on the shape of the farmland and generating a traveling information, causing the automatic harvester to drive based on the traveling information, the traveling information comprises a traveling path of homocentric-squares-shaped or zigzag-shaped, or a path being spiral from outwards to inwards in circles, the traveling path of homocentric-squares-shaped is selected when the farmland is square, and the traveling path of zigzag-shaped is selected when the farmland is rectangular. (a) detecting and forming, by a detection device, a basic farmland information of a farmland; and (b) receiving and analyzing, by a path planning device, the basic farmland information, and planning a traveling path of the automatic harvester according to the basic farmland information, wherein the basic farmland information comprises size, surface area, shape, coordinates, or crop category of the farmland; when the automatic harvester is driving, generating, by an obstacle driving detector, an obstacle information when an obstacle is detected, and sending the obstacle information to the path planning device; determining, by the path planning device, whether the automatic harvester stops, keeps driving, or re-plans another traveling path accordingly; characterized in that, the traveling path planning method further comprising: presetting, by a path setting module of the path planning device, a traveling mode of the automatic harvester based on the shape of the farmland and generating a traveling information, causing the automatic harvester to drive based on the traveling information, the traveling information comprises a traveling path of homocentric-squares-shaped or zigzag-shaped, or a path being spiral from outwards to inwards in circles, the traveling path of homocentric-squares-shaped is selected when the farmland is square, and the traveling path of zigzag-shaped is selected when the farmland is rectangular. when the automatic harvester is driving, generating, by an obstacle driving detector, an obstacle information when an obstacle is detected, and sending the obstacle information to the path planning device; determining, by the path planning device, whether the automatic harvester stops, keeps driving, or re-plans another traveling path accordingly; characterized in that, the traveling path planning method further comprising: presetting, by a path setting module of the path planning device, a traveling mode of the automatic harvester based on the shape of the farmland and generating a traveling information, causing the automatic harvester to drive based on the traveling information, the traveling information comprises a traveling path of homocentric-squares-shaped or zigzag-shaped, or a path being spiral from outwards to inwards in circles, the traveling path of homocentric-squares-shaped is selected when the farmland is square, and the traveling path of zigzag-shaped is selected when the farmland is rectangular.