The analysis of approaches to the construction of chaos control systems for the process of granulation of mineral fertilizers in a fluidized bed was carried out. The study proved the existence of deterministic chaos, which is an unstable limit cycle, which indicates the high sensitivity of the system to input conditions and parameters and indicates the possibility of influencing the nature of oscillations by changing the input parameters, namely the consumption of drops and coolant, which provides the opportunity to control the regime mixing in the system and keep the mixing mode active. To build a chaos control system, a mathematical model of the granulation process in a fluidized bed was used, taking into account fluidized bed hydrodynamics, kinetic energy transfer, energy dissipation, compression of droplets with particles, their adhesion to the surface, kinetics of solution drying on the surface of particles. The chaos control system made it possible to manage the flow of the heat carrier, which increased the chaotic nature of the system, i.e. accelerated heat and mass exchange between particles, drops and the heat carrier, while maintaining controllability.