Mixing pump system for the continuous production and conveyance of a hardenable building material in the form of a homogeneous, pumpable building material dispersion which is formed from an inorganic, non-metallic binding agent bulk material, from an aggregate and from mixing water, wherein the mixing pump system has a first mixing pump for producing a pumpable, flowable binding agent suspension from the binding agent bulk material and the mixing water, and wherein a binding agent line is connected to the first mixing pump for outputting the binding agent suspension, wherein the mixing pump system further comprises a second mixing pump, wherein the second mixing pump has: - an aggregate storage container for adding and receiving the aggregate, - a mixing unit connected to the aggregate storage container, comprising a tubular mixing chamber and a mixing shaft rotatable therein, for mixing the aggregate with the binding agent suspension to form the building material dispersion, characterized in that the mixing pump system further comprises a control and regulation unit connected to the first mixing pump and second mixing pump for controlling the delivery rate and for the coordinated switching on and off of the first mixing pump depending on the operating state of the second mixing pump, wherein the binding agent line leading from the first mixing pump for inputting the binding agent suspension into the mixing unit is connected laterally to the mixing chamber of the mixing unit, and wherein the second mixing pump further comprises: - an output shaft arranged in the aggregate storage container, aligned coaxially with the mixing shaft and connectable thereto for conveying the aggregate from the aggregate storage container into the mixing unit, and - a conveyor unit axially connected to the mixing unit for conveying and outputting the building material dispersion into a building material conveyor line. wherein the mixing pump system further comprises a second mixing pump, wherein the second mixing pump has: - an aggregate storage container for adding and receiving the aggregate, - a mixing unit connected to the aggregate storage container, comprising a tubular mixing chamber and a mixing shaft rotatable therein, for mixing the aggregate with the binding agent suspension to form the building material dispersion, - an aggregate storage container for adding and receiving the aggregate, - a mixing unit connected to the aggregate storage container, comprising a tubular mixing chamber and a mixing shaft rotatable therein, for mixing the aggregate with the binding agent suspension to form the building material dispersion, characterized in that the mixing pump system further comprises a control and regulation unit connected to the first mixing pump and second mixing pump for controlling the delivery rate and for the coordinated switching on and off of the first mixing pump depending on the operating state of the second mixing pump, wherein the binding agent line leading from the first mixing pump for inputting the binding agent suspension into the mixing unit is connected laterally to the mixing chamber of the mixing unit, and wherein the second mixing pump further comprises: - an output shaft arranged in the aggregate storage container, aligned coaxially with the mixing shaft and connectable thereto for conveying the aggregate from the aggregate storage container into the mixing unit, and - a conveyor unit axially connected to the mixing unit for conveying and outputting the building material dispersion into a building material conveyor line. - an output shaft arranged in the aggregate storage container, aligned coaxially with the mixing shaft and connectable thereto for conveying the aggregate from the aggregate storage container into the mixing unit, and - a conveyor unit axially connected to the mixing unit for conveying and outputting the building material dispersion into a building material conveyor line.