Abstract: Garlic processing wastewater is very special high-concentration wastewater with COD up to tens of thousands of milligrams per liter,it also contains allicin with a strong bactericidal effect,and thus it is difficult to achieve compliance emissions using ordinary activated sludge aeration treatment,leading to a large number of garlic processing plants being shut down due to environmental pollution problems. Garlic processing wastewater pollution has become not only a bottleneck constraining China's garlic industry development,but also an urgent need to solve the environmental protection problem. Therefore,this study summarized the characteristics of garlic wastewater,analyzed the existing problems and compared the applications of traditional physical treatment,biological treatment,enzyme treatment,micro-electrolysis treatment and membrane separation treatment in garlic processing wastewater treatment,and finally proposed a new membrane processing technology to treatment garlic processing waste water.