A task processing method, a processing apparatus, and a computer system are provided. Implementation of the method includes: generating, by a first processing apparatus (210), a plurality of tasks, and determining task description information of the plurality of tasks, where the task description information of the plurality of tasks is used to indicate a dependency relationship between the plurality of tasks (301); sending an instruction to a second processing apparatus (220), where the instruction includes the plurality of tasks and the task description information of the plurality of tasks (302); and receiving the instruction, and processing the plurality of tasks based on the dependency relationship between the plurality of tasks (303). The method can effectively reduce a waiting delay, fully exploit a computing capability of an acceleration chip, and improve task processing efficiency.