The invention relates to a construction method and application of a continuous high-concentration sand discharging model of a vertical sand bin for superfine tailings, and belongs to the technical field of mining. The differences between the constructed sand discharging model and the existing gravity settling model are that the projects of feeding, overflow and underflow sand discharging, in a same sand bin, of the constructed sand discharging model are carried out at the same time; and the existing gravity settling model needs a plurality of groups of vertical sand bins to carry out the sand loading and tailing settling processes at the same time to satisfy a sand bin sand discharging process, and each sand bin needs to undergo a process of carrying out feeding and overflow until the whole sand bin is full of tailings and then carrying out underflow sand discharging. The model constructed according to the method has the advantages of decreasing the work quantity of the sand bin, avoiding the step of emptying the sand bin to change the sand bin, simplifying an operation process of mud making, greatly decreasing the quantity of secondary mud making of high-pressure wind water in the sand discharging process, and saving the costs of water and electricity.