The invention discloses a mount assembly for an automobile engine. The mount assembly comprises an outer framework and an inner framework assembly, wherein the outer framework is provided with an inner cavity for being matched with the inner framework assembly, rectangular grooves are formed in the two sides of the inner cavity for being matched with two rubber units, each of the two rubber units comprises a metal limit plate in inlaying matching with the corresponding rectangular groove, and a square rubber unit provided with a metal middle plate at the middle part, and the metal limit plate and the square rubber unit are mutually parallel and connected; and the inner framework assembly comprises a middle framework and an inner framework, the upper part of the middle framework is matched with the lower part of a first rubber body, the first rubber body is composed of a first rectangular elastic unit and a second rectangular elastic unit, and the first rectangular elastic unit and the second rectangular elastic unit form an included angle with an outward opening to be matched with a lug on the lower part of the inner framework. The mount assembly with the design is high in fatigue resistance, high in vibration isolation effect, excellent in decoupling performance, and capable of effectively controlling the displacement of the engine.