PURPOSE: An air-bag assembly is provided to secure a precise assembly quality by maintaining the combination state of an air-bag module and a steering wheel using a fixing unit. CONSTITUTION: An air-bag assembly includes a steering wheel(140) and a air-bag module(100). A mounting plate(148) is arranged on the center of the steering wheel. The air bag module is installed to the steering wheel. The air-bag module includes an air-bag unit(110) and a horn plate(120). The horn plate is fixed to the air-bag unit. A first and a second guide units(130, 150) are formed on the steering wheel The first and the second guide units are formed into complementary shapes to each other.
