The use of lysozyme in pharmaceuticals and health care has been quite broad in scope and application. Research has proven that microbial lysozyme is effective in lysing the cell walls of gram positive and gram negative bacterial. Practical applications show that microbial lysozyme has a strong synergy with the antibiotic for 2-8 times, control the drug-resistance problem. It has been widely applicated in many medicine such as injection, tablets and capsules etc.