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Breathing is essential in the metabolism of the body,and respiratory and cardiovascular diseases can be detected and prevented as early as possible through monitoring breathing regularly. At present,the respiratory detection technology is generally divided into two categories:contact and non-contact,with their own advantages and disadvantages. Contact method can acquire data simply and quickly,however,non-contact method needs to adapt certain technical means,which is non-invasive,to obtain data of human body. The research progress of respiratory detection technology is expounded,and the application range of respiratory detection technology and future research direction are analyzed combined with the existing products of each new technology in this paper.