As a result of Internet development,a large amount of up -to -date informa tion becomes available on Internet,making internet an indisp ensable tool in today' s scientific and technical research.On -line inquiry and search for information are very common in new technology research and development.This has led to a new question whether to take informatio n on internet into consideration in p atent novelty examination.The auth or anal-yses different point of views to this puzzlement and puts forward his own.