The level of alert of the state is generally divided into four levels.

(1) Fourth-level combat readiness, that is, the state of combat readiness of the troops when a major emergency occurs abroad or a major abnormality occurs in China's surrounding areas, which may have a greater impact on China's transportation and stability. The main work of the troops: conducting combat readiness education and combat readiness inspections; adjust the amount of duty and duty force; Strengthen combat readiness duty and situation research, and closely grasp the situation; Keep communication flowing; strict border management; Strengthen patrol vigilance.

(2) Level 3 combat readiness, that is, the situation is tense. The state of combat readiness of the troops in the event of a major anomaly in the surrounding area that may pose a direct military threat to our country. The main tasks of the troops: to carry out combat readiness mobilization; Strengthen combat readiness duty and communication support, so that the troops (detachments) on duty can carry out combat missions at any time; Keep a close eye on the enemy's movements and keep abreast of the situation in a timely manner; Leave of absence, recuperation, family visits, job transfers and discharges are stopped. control personnel to go out, prepare to gather troops, and recall personnel who go out; unsealing, overhauling, and replenishing weapons, equipment, equipment, and war readiness materials; If necessary, unseal the front-line position fortifications; revision of the combat readiness program; Conduct combat training and carry out logistical and equipment support work at all levels.

(3) Level 2 readiness, that is, the state of combat readiness of the troops when the situation deteriorates and a direct military threat is posed to our country. The main tasks of the troops: in-depth mobilization for combat readiness; The personnel on duty for combat readiness strictly guard their posts, command and communicate smoothly, closely grasp the enemy's movements, and find out the enemy's intentions; Gather troops; distribute war readiness materials, and pay close attention to the implementation of logistics, equipment and other support; rush to repair weapons and equipment; Complete the emergency expansion of various preparations, and the border troops in important directions are fully equipped according to the wartime establishment; rush to repair fortifications and set up obstacles; Prepare for the evacuation of troops' personnel, weapons, and equipment; adjust and revise the combat plan; Intensify training for combat; Left-behind institutions carry out their work.

(4) Level 1 combat readiness, that is, the state of combat readiness of the troops when the situation is extremely tense and the signs of war against our country are very obvious. The main work of the troops: to enter the mobilization of combat readiness; The personnel on duty for combat readiness are on duty day and night, and the radio command network listens to them all the time to ensure uninterrupted command; We should use all kinds of reconnaissance means to closely monitor the enemy's movements, carry out emergency expansion, and give priority to the replenishment of the required equipment and the combat readiness reserve units of the military region according to their wartime establishment and supplementary capabilities. Complete the position matching; implementation of safeguards; Troop personnel, weapons, and equipment are evacuated and concealed and camouflaged; Left-behind institutions organize personnel to evacuate to predetermined areas; The action plan was perfected, all preparations for the battle were completed, and the troops were on standby.