A terminal, which includes: an operation mode adjusting unit configured to receive an operation mode adjustment instruction generated at least based on the current physiological characteristic data of the terminal's user, and set the terminal's operation mode according to the operation mode adjustment instruction. More intelligent terminal operation mode switching is achieved in the terminal through setting the operation mode of terminal by operation mode adjusting instruction generated at least based on the current physiological characteristic data of the terminal's user, thereby, user experience is improved. An information processing apparatus, a device and method for adjusting operating modes of the terminal are further provided.