The present invention provide a terminal device, including: at least one sensor, a data processing unit, a memory, a CPU, and a storage, where the sensor is configured to sense a corresponding measured object and generate corresponding sensing data; and the data processing unit is configured to collect the sensing data jointly with the CPU in a mutually complementary manner, store the collected sensing data in the memory, perform feature extraction on the sensing data stored in the memory, and store extracted feature data in the storage, where the mutually complementary manner refers to that, when one of the data processing unit and the CPU is in a working state, the other is in a dormant state. The terminal device provided by the embodiments of the present invention can improve a utilization rate of the CPU.