Device for controlling the drawbar load in a multi-axle trailer (1; 3) which can be drawn by a towing vehicle by means of a drawbar, said trailer having at least one axle which can be raised or lowered from a functional position, wherein one or a plurality of axles (I, II) of the trailer (1; 3) can be raised or lowered by means of a computer unit as a function of the loading and/or driving situation of the trailer (1; 3) in such a manner that the drawbar load remains constant within predefinable limits, characterised in that, - for the trailer (1; 3) with a chassis which can be adapted by means of a hydraulic system, the computer unit can be operatively coupled at least to hydraulic components (37, 39, 67) of a front axle; - in that, in the trailer (1; 3) with hydro-pneumatic axle suspension, a respective suspension cylinder of the front axle can be controlled by means of the computer unit for adjusting the drawbar load; - in that the hydraulic system of the trailer (1; 3) has a first control valve unit by means of which the pressure level of a respective suspension cylinder of the drawbar suspension can be set to a value corresponding to a predetermined drawbar height; - in that the hydraulic system has a second control valve unit by means of which the pressure level of the respective suspension cylinder of the front axle can be set to a value corresponding to a desired drawbar load; - in that the axle suspension has accumulators (39, 40, 41, 42) for suspension cylinders in the form of wheel cylinders of the axles (I, II); - in that, for level control of the trailer (1; 3), the pressure level of individual accumulators (39, 40, 41, 42) can be adjusted separately via lines (43, 45) in that the pressure is supplied by means of the first control valve unit in the form of a level control block; and - in that the level control block and the second control valve unit, acting in opposite directions, are connected to the respective suspension cylinder of the front axle. - for the trailer (1; 3) with a chassis which can be adapted by means of a hydraulic system, the computer unit can be operatively coupled at least to hydraulic components (37, 39, 67) of a front axle; - in that, in the trailer (1; 3) with hydro-pneumatic axle suspension, a respective suspension cylinder of the front axle can be controlled by means of the computer unit for adjusting the drawbar load; - in that the hydraulic system of the trailer (1; 3) has a first control valve unit by means of which the pressure level of a respective suspension cylinder of the drawbar suspension can be set to a value corresponding to a predetermined drawbar height; - in that the hydraulic system has a second control valve unit by means of which the pressure level of the respective suspension cylinder of the front axle can be set to a value corresponding to a desired drawbar load; - in that the axle suspension has accumulators (39, 40, 41, 42) for suspension cylinders in the form of wheel cylinders of the axles (I, II); - in that, for level control of the trailer (1; 3), the pressure level of individual accumulators (39, 40, 41, 42) can be adjusted separately via lines (43, 45) in that the pressure is supplied by means of the first control valve unit in the form of a level control block; and - in that the level control block and the second control valve unit, acting in opposite directions, are connected to the respective suspension cylinder of the front axle.