According to the National Emergency Plan for Forest Fire, according to the forest fire risk level, fire behavior characteristics and possible harm degree, the forest fire risk warning level is divided into four levels, which are represented by red, orange, yellow and blue respectively from high to low.

Red warning signal stands for extreme danger, and the forest fire risk rating is five. Combustible in the forest is easy to be ignited and spread rapidly, so it is difficult to put out the fire.

The orange warning signal represents high danger, and the forest fire risk rating is four. Combustible materials in the forest are easy to ignite, easily form a strong fire and spread rapidly, which is very dangerous.

The yellow warning signal represents high risk, and the forest fire risk rating is level 3, so the combustible materials in the forest are easy to ignite and spread, which has high risk.

The blue warning signal represents moderate danger, and the forest fire risk rating is Grade II. Combustible materials in the forest can be ignited and spread, which has moderate danger.