The utility model relates to a beer production device, particularly a wheat steeping device which has the advantages of convenient adjustment, maintenance-free application and good wheat steep effect and is used for a malt wet crushing mill. The device comprises a wheat steeping bin provided with an oblong-shaped wheat inlet and a wheat outlet, and a spraying pipe and a washing mechanism which are installed in the wheat steeping bin; the device is characterized in that a feeding roller is arranged below the wheat inlet, a striker plate and a spraying pipe are respectively arranged below the feeding roller, a discharging roller is arranged on the wheat outlet, a material guiding plate and a return tube are arranged over the discharging roller, a net-shaped water inlet is arranged on the upper side of the return tube and an outflow tube is arranged at the end of the return tube; a spraying system is located below the feeding roller; water flows through a flow guide in the process of feeding malt, and the water is sprayed by a mist thrust jet to the malt during the scattering process of the malt, thereby having the advantages that the spray is even and has no resistance and dead angle, and the optimal steeping effect can be achieved; the wheat steeping device further has the advantages that the steeping time can continuously adjusted, the steep rate of the malt is conveniently checked, wheat skin is more intact and the malt is smooth after grinding, and the material is fed exactly.