Abstract: Trace mineral elements are indispensable component ingredients and nutriment of poultry, which not only keep poultry's growing, breeding, producing normally, but also have a great effect on poultry's immune organ, tissue and regulate its immune response. Improper quantity of supply or proportion of the elements in diet causes the nutrition disorder of poultry. As a result, immune function of poultry could be damaged and depressed. Thus it brings about great influence on normal physiology and production performance of poultry. It is obvious that understanding on the relation between mineral substance and poultry's nutrition and immunity has the signification for guiding poultry's production practice. A survey was made on the effect of trace mineral substance on poultry's immune function for this reason. 

Key words: trace minerals; poultry; immunity 