A new task mode, hardware logic task mode, is presented. Its architecture, schedule and implementation are described with HDL( Hardware Description Language ), and the validity of the system has been proved by logic simulation. It has advantage for real-time applications and overheadsaving for operating system, so it is profitable for the controller in the embedded system. The relationship among RTOS (Real-Time Operating System), SoC(System on Chip), VIA (Virtual Interface Architecture) and hardware logic task is also discussed in the paper.