The utility model relates to a steel ladle sand filling device, in particular to a device capable of effectively improving the steel ladle sand filling effect. The device is suitable for drying of stuffing sand and improves the sand filling effect so as to improve the automatic pouring rate of a steel ladle. The device is arranged on a sand filling platform, and enables the stuffing sand in a stuffing sand bin to be evenly placed in a guide groove with a certain inclined angle through a sliding bin door. The stuffing sand in the guide groove is thoroughly and evenly preheated through thermal radiation formed due to the fact that flames generated from gas burning in a porous gas steel tube heat a heating plate, and moisture of the stuffing sand is eliminated. The stuffing sand which is thoroughly and evenly preheated in the guide groove and without moisture is evenly and continuously poured to a funnel-shaped guide pipe under the dynamic effect of vibration transmission of a vibration machine. Therefore, the stuffing sand accurately enters a water inlet of the steel ladle, and the aim of improving sand filling quality and the sand filling effect is achieved.