Abstract. Belarus and China maintain extensive economic ties. They are actively cooperating in the field of rocketry too. In 2015 at the military parade in Minsk a multiple launch rocket system “Polonez” was demonstrated for the first time. Belarusian experts and politicians declared the “Polonez” MLRS a Belarusian product but Russian experts presumed China's participation in its development. Later Minsk admitted the Chinese assistance in the development of the “Polonez” but it still remains unclear how significant is the role of China in this project. A number of Russian experts believe that “Polonez” is a MLRS which is produced in Belarus under a Chinese license. Nevertheless Russian experts positively assessed its combat capabilities. In addition to MLRS Belarus and China cooperate in the space sphere.