The invention provides a method for monitoring the friction drag and the torque of a large-displacement well. The method comprises the steps of firstly, building a friction drag and torque mechanical analysis model of the large-displacement well, and compiling an analysis program or analysis software; secondly, carrying out friction drag and torque simulation analysis computing under a track section designing condition; compiling monitoring route maps of drilling tool feed-off hook load, drilling tool lift-up hook load and idling lift-off-well bottom hook load under different friction drag coefficient conditions and route maps of rotary drilling torque along with well depth; recording the drilling tool feed-off hook load, the drilling tool lift-up hook load, the idling lift-off-well bottom hook load and the rotary drilling torque of actual drilling during site operation; finally, describing data under actual drilling record on the route maps, and comparing the data with predicted values under different friction drag coefficients and analyzing. According to the method for monitoring the friction drag and the torque of the large-displacement well, provided by the invention, the reason that causes the friction drag and the torque is deeply analyzed through real-time monitoring on the friction drag and the torque, and meanwhile, response analysis is carried out on the borehole cleanliness degree, the borehole quality, the drilling parameters, a bottom drilling tool combination, the drilling fluid performance change, the use of an anti-friction and torque-reducing tool and the like.