The present work comprises a detailed analysis of the physicochemical properties of Sr2+/Zn2+-co-doped LaAlO, materials, where the strontium content was 10 mol%, and the zinc concentration varied 5-10 mol%. The solid state synthesis of compounds was carried out. The structure of parent and doped compounds are discussed. The limits of the homogeneity region were determined, revealing a relatively narrow scope between 0.0 and 0.05. The original LaAlO, matrix is characterized by a perovskite structure with rhombohedral syngony, while the co-doped sample has cubic symmetry. The transport properties of the initial and co-doped samples were studied under varying T, p02, /?H20 conditions. The doped sample exhibited a conductivity that was 2.5 orders of magnitude higher than that of the base LaA103. The introduction of Sr2+/Zn2+ dopants in combination resulted in a favourable impact on the electrical characteristics, attributed to the increased oxygen vacancies. The presented data indicates the prospective applications of LaA10,-based materials in electrolyte membranes for solid oxide fuel cells, pumps and sensors.