The invention discloses a sprayable quick-drying cleaning agent for automatic devices. The cleaning agent comprises, by weight, 2-20 parts of ethanol, 0.2-1 part of triethanolamine, 5-10 parts of 1,2-dimethylcyclohexane, 3-15 parts of 1-methyl-4-(1-methylvinyl)cyclohexene, 4-12 parts of 2-methylpentane, 1-3 parts of terpineol, 2-6 parts of sodium ethylene diamine tetracetate, 0.5-1.5 parts of nano-diamondene, 5-15 parts of alkyl glucoside, 0.5-2 parts of a functional additive, 5-10 parts of a cleaning aid and 20-40 parts of water. The sprayable quick-drying cleaning agent for automatic deviceshas a good stability, can be sprayed on surfaces of the automatic devices and other devices which cannot be touched or easily manually cleaned through a spray gun, and has the advantages of fast volatilization and drying, strong detergency, no residual, stable performances, no watermarks on the surface of a workpiece after being dried at room temperature, convenience in operation, and excellent practical use effect.