Provided in the present disclosure are a method and apparatus for transmitting information, a base station, and user equipment, the method including: determining transmission configuration information of an unlicensed spectrum, the transmission configuration information being used to indicate various data transmission starting positions within a preset time window; sending the transmission configuration information to user equipment; performing information transmission with the user equipment using a channel of the unlicensed spectrum according to the transmission configuration information. By employing the method for transmitting information as provided by the present disclosure, unlicensed spectrum resources may be effectively used to transmit information.