Bioreactor is the general name of containers used in biological reaction process, including enzyme reactor, fixed cell reactor, various cell incubators and fermentors. In short, it is a special place that uses the activity of biological cells or enzymes to catalyze reactions. 2. The advantages of using bioreactor over chemical synthesis reactor are high efficiency, stability, low cost and reusability. 3. For example, the main advantages of using mammary gland bioreactor are: stable product quality; Low cost; Short development cycle; Pollution-free; The economic benefit is remarkable.