A kind of clean degree judgment method of filtration members with what respirator,The suspension grain concentration of the air of environment where system measures the respirator with a suspension grain sensor,Default air suspension grain concentration and filtration members is recycled to use the relationship of time,Show that the setting of the filtration members uses the time,Most Hou when the filtration members cumulative actual reaches the setting using the time using the time,Issue an alerting； Thereby,User can learn the filtration members that replace or clean respirator by the alerting,Make filtration members that will not just be eliminated when still can be used,It can avoid filtration members again still to be used when filter effect is insufficient,And then respirator is avoided to provide unclean air.一種用於呼吸器之過濾件乾淨度判斷方法，係以一懸浮粒感測器量測該呼吸器所在環境之空氣的懸浮粒濃度，再利用預設之空氣懸浮粒濃度與過濾件使用時間之關係，得出該過濾件之設定使用時間，最後在該過濾件實際累積使用時間達到該設定使用時間時，發出一警示訊號；藉此，使用者可藉由該警示訊號得知應該更換或清洗呼吸器之過濾件，使過濾件不致在仍可使用時就被淘汰，又可避免過濾件在過濾效果已不足時仍被使用，進而避免呼吸器提供不潔淨的空氣。
