A computer-implemented driving coordinate system construction method, wherein the method comprises: determining a road boundary line on one side of a road on which a vehicle is located as a reference line for establishing a driving coordinate system; determining a reference line point with the minimum distance between a vehicle position and the reference line as an origin ( O F) of the driving coordinate system in a vehicle coordinate system; determining a road guiding line direction as an X-axis ( X F) of the driving coordinate system based on the origin ( O F), and determining a direction following a left-hand rule with the road guiding line direction as a Y-axis ( Y F) of the driving coordinate system; forming the corresponding driving coordinate system based on the origin ( O F), the X-axis ( X F) and the Y-axis ( Y F); and switching the reference line to adjust the driving coordinate system during a driving process of the vehicle so that the driving coordinate system can always be consistent with a road trend, and the switching comprising: taking a preset default road boundary line as the reference line; when a navigation direction information about the vehicle exists, acquiring the navigation direction information, and switching the reference line to a road boundary line on a navigation direction side according to the navigation direction information; and, when the navigation direction information does not exist, determining a current road type, and maintaining a current reference line unchanged under the condition that the road on which the vehicle is currently located is a ramp, and switching the current reference line to the default road boundary line under the condition that the road on which the vehicle is currently located is a main road. determining a road boundary line on one side of a road on which a vehicle is located as a reference line for establishing a driving coordinate system; determining a reference line point with the minimum distance between a vehicle position and the reference line as an origin ( O F) of the driving coordinate system in a vehicle coordinate system; determining a road guiding line direction as an X-axis ( X F) of the driving coordinate system based on the origin ( O F), and determining a direction following a left-hand rule with the road guiding line direction as a Y-axis ( Y F) of the driving coordinate system; forming the corresponding driving coordinate system based on the origin ( O F), the X-axis ( X F) and the Y-axis ( Y F); and switching the reference line to adjust the driving coordinate system during a driving process of the vehicle so that the driving coordinate system can always be consistent with a road trend, and the switching comprising: taking a preset default road boundary line as the reference line; when a navigation direction information about the vehicle exists, acquiring the navigation direction information, and switching the reference line to a road boundary line on a navigation direction side according to the navigation direction information; and, when the navigation direction information does not exist, determining a current road type, and maintaining a current reference line unchanged under the condition that the road on which the vehicle is currently located is a ramp, and switching the current reference line to the default road boundary line under the condition that the road on which the vehicle is currently located is a main road. taking a preset default road boundary line as the reference line; when a navigation direction information about the vehicle exists, acquiring the navigation direction information, and switching the reference line to a road boundary line on a navigation direction side according to the navigation direction information; and, when the navigation direction information does not exist, determining a current road type, and maintaining a current reference line unchanged under the condition that the road on which the vehicle is currently located is a ramp, and switching the current reference line to the default road boundary line under the condition that the road on which the vehicle is currently located is a main road.