The invention provides an optical interface control method and device. The method comprises the following steps: a management processor detects whether an electric communication signal sent by a receiver is received or not; if a power supply circuit of a laser driver is in a closed state and the management processor does not receive the electric communication signal sent by the receiver within first pre-set duration, the power supply circuit of the laser driver is controlled to be in a disconnection state through an electric switching module, so that the laser driver stops working; and sending of the electric communication signal of a transmitter optical subassembly is interrupted. By means of the embodiment of the invention, energy consumption of optical communication equipment can be reduced.