A light distribution control device includes processing circuitry configured to receive environment information indicating an environment in which a host vehicle is placed; receive an instruction from a driver of the host vehicle to switch an irradiation lamp of the host vehicle; perform estimation of whether or not the driver has an intention to switch the irradiation lamp on a basis of an action of the driver; switch the irradiation lamp of the host vehicle on a basis of the environment information; and learn a driving scene in which the irradiation lamp of the host vehicle is to be switched by using the received environment information at a second time point at which the intention is estimated to be present, the second time point being prior to a first time point at which the instruction is received.
