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 (I) 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 (ECU) 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 (ECU) can be operatively coupled at least to hydraulic components of a front axle (I); - in that , in the trailer (1; 3) with hydro-pneumatic axle suspension , a respective suspension cylinder of the front axle (I) can be controlled by means of the computer unit (ECU) 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 (I) can be set to a value corresponding to a desired drawbar load; - in that the axle suspension has accumulators 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 can be adjusted separately via lines 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 (I). - for the trailer (1; 3) with a chassis which can be adapted by means of a hydraulic system, the computer unit (ECU) can be operatively coupled at least to hydraulic components of a front axle (I); - in that , in the trailer (1; 3) with hydro-pneumatic axle suspension , a respective suspension cylinder of the front axle (I) can be controlled by means of the computer unit (ECU) 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 (I) can be set to a value corresponding to a desired drawbar load; - in that the axle suspension has accumulators 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 can be adjusted separately via lines 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 (I). <EOS>