The invention discloses a method and
system for controlling the traction force of a vehicle body in a snowfield driving state, and the method comprises the steps that an ESC control module monitors the parameter information of the vehicle in the driving state through a sensor, and obtains a
rolling resistance coefficient through calculation of a calculation module; the ESC control module judges the running state of the vehicle and judges whether the vehicle is in a deep
snow running state or not, if yes, the
road surface is calibrated, the
slip rate offset is generated, and the ESC control module sends the
slip rate offset to the traction force control module to adjust the output size of the traction force of the vehicle; through a calculation module, parameter information detected and collected by an ESC control module is calculated to obtain a
rolling resistance coefficient, the
slip rate offset is adjusted according to the change of the
rolling resistance coefficient, and the slip rate offset is sent to a traction force
control system to adjust the output of traction force. The control precision of the
traction control system on a deep
snow road surface can be improved, and the vehicle running speed is increased.