The results of investigation of Zn₂SnO₄ superfine powders synthesis processes by thermaltreatment of coprecipitated zinc and tin (IV) compounds from solutions are shown. The coprecipitated powder mixtures were studied by TG/DSC, XRD, XRF and SEM methods. Thermaltreatment of the precipitate samples in range of 673 – 1223K for 2 h revealed that the synthesis of Zn₂SnO₄ proper oxide can be observed at above 1100 K and the materials yield is about 83% at 1223 K. The porous agglomerates of Zn₂SnO₄ particles about 50 – 200 nm in size are formed under the annealing. The given method was tested to prepare Cu/Zn₂SnO₄ powder mixture and it showed its efficiency.