Early warning coating and application thereof

The invention relates to the field of chemical engineering, and discloses an early warning coating and application thereof.The early warning coating comprises a first coating, an early warning coating arranged on the first coating and a third coating arranged on the early warning coating, and the early warning coating comprises developing particles; the early-warning coating provided by the invention comprises a first coating with an anti-corrosion function, an early-warning coating with an early-warning color development function and a third coating with a reinforcing function, and the early-warning coating can generate color development early warning when slight leakage of high-risk chemicals in a chemical device, which is difficult to find by naked eyes, occurs; according to the method, the seepage points can be identified and repaired before large-range leakage, so that the safety and the overhaul efficiency of the chemical device are remarkably improved, and the overhaul cost and the maintenance cost are