The invention discloses a corrosion-inhibition type water-based metal cleaner. The corrosion-inhibition type water-based metal cleaner comprises the following raw materials in parts by weight: 15-30 parts of coconut diethanolamide, 5-12 parts of octyl phenol polyoxyethylene ether, 3-10 parts of alkyl benzene sodium sulfonate, 7-15 parts of sodium xylene sulfonate, 5-10 parts of citric acid, 4-12 parts of sodium citrate, 1-4 parts of polyvinyl chloride latex, 0.5-3 parts of non-ionic polyacrylamide, 4-10 parts of sodium carbonate, 15-30 parts of hydrophilic alcohol, 3-6 parts of instant modified sodium disilicate, 15-30 parts of dodecanedioic triethanolamine, 2-5 parts of N-lauroyl sarcosine triethanolamine, 3-8 parts of mercaptobenzothiazole sodium, 1-5 parts of a defoaming agent, 1-5 parts of a fungicide, 30-40 parts of soft water and 100-150 parts of water. The corrosion-inhibition type water-based metal cleaner disclosed by the invention is strong in detergency, good in anti-rusting property, less in environment-friendly pollution, high in cleaning speed, less in residues after cleaning, good in stability and capable of being used in hard water.