In article are shown results of necessity of wide application of mathematical modelling of objects and processes for food manufactures is shown. Main principles of computer modelling, examples of mathematical models of processes and objects are resulted.An example of modeling apple juice with given parameters from composite juice from apples of the Lemon, Aport, Stolovka varieties is given. As a result, with the help of prospective regulatory modeling on Microsoft Excel, a calculation was made of the percentage of added juices to ensure titrated acidity of 0.3% and vitamin C 0.02%
