The utility model discloses an anaerobic enzyme deep storage tank which comprises a storage tank body, heat insulation mechanisms are arranged on the outer surfaces of the two sides of the storage tank body, supporting columns are fixedly installed on the outer surfaces of the two sides of the lower end of the storage tank body, and an antifouling housing and a liquid outlet device are arranged onthe outer surface of the middle of the lower end of the storage tank body. The utility model discloses a deep storage tank for oxygen-free enzymes. The device is provided with a stable base, an antifouling housing and a heat insulation mechanism, the stability of the storage tank can be improved; the splashed enzymes can be stored; people can conveniently clean the device; use by people is facilitated, dust can be prevented from covering the liquid outlet device, dust can be prevented from covering enzymes in the discharging process, use of people is facilitated, the heat insulation effect ofthe storage tank can be improved, the situation that the storage quality of the enzymes is affected due to the large temperature difference between the inside and the outside is prevented, a certainprotection effect is achieved, use of people is facilitated, and a better use prospect is brought.