The invention provides an indoor base station and a positioning method, and belongs to the technical field of wireless communication. An indoor base station comprises a signal processing module, at least two antennas and a control module; the signal processing module is connected with each antenna through a corresponding connecting channel; at least one of the at least two antennas is an externalantenna connected with the signal processing module through a cable. The control module is connected with the connection channels and is used for controlling the connection channels corresponding to the at least two antennas to be sequentially connected according to a time sequence in a time period when the terminal sends the uplink positioning information, so that the signal processing module sequentially acquires radio frequency signals which are received by the at least two antennas and contain the uplink positioning information; and the signal processing module is used for processing the acquired radio frequency signal containing the uplink positioning information to obtain a processed signal for positioning the terminal. The indoor positioning precision of the terminal is improved byadding the external antenna, and the cost is low.