The invention discloses a continuous stirrer for mixing a multi-component high-viscosity sand-containing material. The stirrer comprises a cylindrical stirring tank (3) with a feed inlet (1) in the lower end and a discharge port (2) in the lower end. A secondary stirring device is vertically arranged in the cylindrical stirring tank (3), and the upper end of the secondary stirring device stretchesout of the stirring tank (3) and is connected to a power transmission device (4) arranged above the stirring tank (3). The continuous stirrer has the advantages of being skillful in structural design, reliable to use and low in cost, stirs the multi-component high-viscosity material, and applies stirring forces in different directions through different stirring blades to guarantee full convectionamong mixed materials, so that the stirring quality and the stirring efficiency are improved. The axial force of a stirring shaft is relatively small as a result of an arrangement form of the blades,so that the service life of the stirrer is prolonged. In addition, the mixed materials are supplied continuously by controlling the flow rate of a valve, so that the construction quality is further guaranteed and the continuous construction demand is met.