*High density and high throughput: simultaneous determination of tens of thousands of protein peptide biochemical reactions *High specificity: deeply reveal the protein binding mechanism, accurately locate the specific epitope of antibody and protein binding area *Low cost, short cycle and simple operation: the cost of peptide array chip based on chemical synthesis is one hundred percent of that of anti chip and whole protein chip based on biological culture *Accurate and reliable: stable purity, clear results, intuitive and easy to analyze