Self-inhalation filtering type breathing device capable of preventing particulate matter

The utility model discloses a self-inhalation filtering type breathing device capable of preventing particulate matter. The self-inhalation filtering type breathing device capable of preventing particulate matter comprises a four-hole connector and an air filter, wherein the air filter comprises a filter front cover, a filter rear cover and filtering cotton arranged between the filter front cover and the filter rear cover, a plurality of air inlets are formed in the front side of the filter front cover, rear cover pipe holes are formed in the back side of the filter rear cover, the rear cover pipe holes are connected with the air inlets of the four-hole connector, a first pneumatic piston is arranged in each rear cover pipe hole, air outlet covers are arranged on air outlets of the four-hole connector, second pneumatic pistons are arranged in the air outlet covers, and two air inhalation holes of the four-hole connector are sleeved with suction heads respectively. The self-inhalation filtering type breathing device capable of preventing particulate matter has the advantages that resources are saved, use coat is low, using is convenient, the breathing device can completely in tight fit with the nostril so as to effectively filter the particulate matter in inhaled air out, and speaking is not affected when the breathing device is worn. In addition, the utility model discloses a reinforced type self-inhalation filtering type breathing device capable of preventing particulate matter. According to the reinforced type self-inhalation filtering type breathing device capable of preventing particulate matter, a water filter is additionally arranged based on the ordinary self-inhalation filtering type breathing device capable of preventing particulate matter, and thus the filtering effect and the use comfort level are improved.