The subjects of Tsinghua University food postgraduate entrance examination mainly include food chemistry, food microbiology, food nutrition, food processing technology, food safety and inspection. Among them, food chemistry mainly studies the chemical composition of food and its changing law, food microbiology mainly studies the species, quantity and growth characteristics of microorganisms in food, food nutrition mainly studies the nutritional composition of food and the nutritional needs of human body, food processing technology mainly studies the principle and technology of food processing, and food safety and inspection mainly studies the detection and control of harmful substances and microorganisms in food. These subjects are all important parts in the field of food engineering, which is of great significance to the research and application of food engineering. Expansion and supplement: In addition to the above subjects, Tsinghua University Food Postgraduate Entrance Examination may also include food engineering, biostatistics, food functions and so on. Food engineering mainly studies the basic principles of mass transfer, heat transfer and mass transfer in food processing, biostatistics mainly studies the application of statistical methods in the biological field, and food functionalism mainly studies the influence of food on human health and its mechanism. The study of these subjects can fully understand and master the knowledge and skills in the field of food engineering, which is helpful to improve the understanding and application ability of food industry.