The invention discloses a dual-in dual-out control device comprising a main water pump electrically connected with a commercial power supply through a main line and an auxiliary water pump electrically connected with a power generator power supply through an auxiliary line; middle parts of the main and auxiliary lines are correspondingly and electrically connected through an assist line; the main line on one side of the assist line is connected in series with a commercial power switch and a commercial power contactor, and the main line the other side is connected in series with a main water pump switch; the auxiliary line on one side of the assist line is connected in series with a power generator switch and a power generator contactor, and the auxiliary line on the other side of the assist line is connected in series with an auxiliary water pump switch; the assist line is connected in series with a contact switch; the dual-in dual-out control device can realize logic control of the main water pump, the auxiliary water pump, the commercial power supply and the power generator power supply, can assist the logic control dual-channel water pump to work and switch, is reliable in control, strong in anti-interference capability, simple in operation, low in cost, thus greatly improving control reliability and accuracy.