The invention discloses an automobile engine camshaft. A camshaft journal oil groove is arranged on a first journal. An engine oil path is characterized in that different camshaft journal oil grooves are connected to a main oil gallery through branch oil paths and are communicated with the oil path of a phaser arranged on the end part of the camshaft through different camshaft oil holes arranged inside the camshaft. Adopting above technical proposal, the automobile engine camshaft integrates a VVT oil supply structure and a lubricating oil passage structure of the camshaft to a whole, thus not only satisfying the phaser and but also ensuring the lubrication of the camshaft. The oil passage is made through casting, thus simplifying the process while satisfying the requirement of high performance of the engine; and the oil passage is high in work stability. The camshaft is simple and compact in structure, thus reducing the occupying area and weight of the engine and reducing the processing difficulty of engine. The automobile engine camshaft saves cost and greatly improves the performance-to-price ratio of the engine.