China's main air defense weapons are cannons, mortars or anti-aircraft guns.

Cannon is a kind of artillery with long barrel, small launching elevation, low trajectory, direct fire and high muzzle velocity, which is often used by the army in the hard battles of the former enemy.

Mortar is a kind of curved artillery to cover the target, which is mostly used as a suppression weapon for units below infantry battalion. Its greatest ability is to kill the enemy at close range or behind obstacles such as hills. It can be used to destroy light fortifications or bridges, and can also be used to cast smoke bombs and flares. It is also used as a deep-water bomb thrower in naval battles.

Anti-aircraft guns are mainly used to attack air targets such as airplanes, helicopters and airplanes. So anti-aircraft guns are the main air defense weapons.