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The question as to the prevalence of toxigenic microscopic fungi in foodstuffs originating in Kazakhstan is but little studied. In particular, no information on the microflora in the products coming from the south-western areas of the republic are available. The paper brings forth the results consequent upon the study of the problem in the Guriev and Dzhambul regions typical of this area. Microflora in 317 samples of various foodstuffs (wheat grains, flour and mealy products, rice, husket millet, dried meat, etc.) taken in rural families was studied by conventional methods. A highly frequent and intensive contamination of the vegetable and animal products with micomycetes, among which a definite prevalence of the species belonging to genus Aspergillus was noted. Aspergilli were represented mainly by the species known by their toxigenicity (A. flavus, A. fumigatus, A. candidus, A. niger, A. versicolor and others). A conclusion is drawn as to a potential hazard of mycotoxicoses arising in the south-western part of Kazakhstan. Recommendations for instituting preventive measures are given.