Microalgae, a high photoautotrophy plant, is widely distributed and contained rich nutrient contents. Microalgae can synthesize various special bioactive compounds, and play an important role in improving animal growth, immunity and meat quality, meanwhile, it can also curb environmental pollution and reduce competi-tive pressure among food, feed and fuel industry. Therefore, the nutritional characteristics of microalgae and its effects on animal growth and meat quality were reviewed in this paper so that it can provide a reference for the development and utilization of microalgae in animal hu...