Abstract: Polysomnography (PSG) is the gold standard test for the diagnosis of obstructive sleep apnea (OSA). However, PSG is inconvenient and uneconomical because of the large number of electrodes and sensors, the need for venues and professional doctors to attend. As a result, home sleep apnea testing (HSAT) is attracting more and more attention as an alternative to PSG, because of its simplicity, rapidness and economy. This review introduces the classification, application scope, reliability of different types of HSAT and possible differences caused by different analysis methods, summarizes the existing problems and puts forward the prospect.