Introduction. Chlorella is an amazing microscopic algae plant that is a green algae. It is widely used as a feed additive due to its high nutritional composition and unique properties. The main strain of chlorella, which is used in the production of feed additives, is called Chlorella Vulgaris. Materials and methods. As a methodological basis for this work, the works published by both Russian and foreign specialized specialists are considered. Among the scientific methods that we relied on in carrying out the work, general scientific ones are distinguished, in particular, synthesis, analysis, comparison, as well as generalization. Results and discussion. Adding chlorella to the diet of animals has a number of advantages. Firstly, it helps to reduce the mortality of young animals to a minimum. Secondly, chlorella promotes better absorption of feed by animals. Due to this, the weight gain of pigs, cattle, rabbits and birds increases, and the egg production of chickens increases. The third advantage of chlorella is that it contains a lot of vitamins that are necessary for the normal functioning of the animal body. There are several ways to add chlorella to an animal’s diet. One of the most effective ways is to use a suspension. This allows you to save half of the water-soluble vitamins that are in the medium. Conclusion. A review of the literature by both domestic and foreign authors has shown that chlorella suspension is a highly valuable feed additive for farm animals. It is necessary to conduct additional research to study its impact on the productivity and safety of young animals raised for fattening. This makes it possible to introduce chlorella suspension into production.