The invention discloses a cleaning agent for molybdenum aluminum molybdenum coated glass, which comprises the following components by weight: 3-8% of anionic surfactants, 10-30% of nonionic surfactants, 0.2-3% of corrosion inhibitors, 10-30.25% of cosolvents, 5-15% of organic solvent, 0.2-0.5% of chelants and 37.35-64.1% of deionized water. The cleaning agent for the molybdenum aluminum molybdenum coated glass is strong in dirt-removing capacity, wide in environmental suitability, good in stability, low in foam, easy to rinse, good in wettability, free of damage to glass surface, elements such as phosphorus and silicium, peculiar smell, toxicity, corrosivity and pollution to environment, safe, reliable, incombustible, low in cost, convenient to transport and store and low in cleaning cost. In addition, the cleaning agent for the molybdenum aluminum molybdenum coated glass does not explode.