Method and device for adjusting SAR (Synthetic Aperture Radar) value and mobile terminal

The embodiment of the invention discloses a method and a device for adjusting an SAR (Synthetic Aperture Radar) value and a mobile terminal, a radio frequency modem of the mobile terminal is preset with a plurality of working modes, each working mode corresponds to a preset register value of an antenna switch, and different preset register values correspond to different performance states of an antenna. The method comprises the following steps: when an antenna is in a transceiving state, acquiring a current transmitting performance parameter and a current receiving performance parameter of the mobile terminal; and judging a current working mode according to the transmitting performance parameter and the receiving performance parameter, and controlling the antenna switch to be in a preset register value corresponding to the current working mode so as to adjust the SAR value. According to the technical scheme of the invention, the working modes of the radio frequency modem are divided, and the different preset