Bloody foamy sputum is a foamy sputum containing a large amount of blood. The sputum is red in color. Large amounts of foamy sputum can be seen in pulmonary aspergillosis (sputum can smell like wine); pink foamy sputum is seen in pulmonary edema, etc. Chronic lung abscess, bronchiectasis, etc. can also have foamy sputum. How to effectively prevent pulmonary aspergillosis? 1, prevention (1) when working in the environment suspected of Aspergillus infection, should be well protected, such as wearing a protective mask to avoid inhaling a large number of germs. In the fungal laboratory for the operation of Aspergillus fumigatus, Aspergillus flavus, Aspergillus niger and other bacteria, more attention should be paid to prevent the inhalation of these pathogens into the lungs. (2) Strengthen protective measures, such as the need to wear a mask when working in dusty places, timely treatment of eye and skin trauma, try to eliminate or reduce the impact of various precipitating factors, and actively treat chronic diseases. 2, treatment Patients with allergic reactive bronchopulmonary aspergillosis, antifungal drugs such as diphenhydramine B via tracheal drip or nebulized inhalation, although it is effective in eliminating the bronchial Aspergillus, but it is easy to relapse. At present, corticosteroids are considered to be the most effective drugs for the treatment of this disease, which can inhibit metaplasia, reduce sputum and make the bronchial lumen unfavorable for Aspergillus implantation. Generally, oral prednisone 0.5mg/kg/d is given to help lung infiltration absorption. 2 weeks later, it is changed to every other day and maintained for at least 3 months. It can also be combined with diphenhydramine B. Nebulized inhalation is more satisfactory. Usually flumethasone 2.5mg and diphenhydramine B 5mg are added to saline 10ml for nebulized inhalation twice daily for 1 month. For recalcitrant patients, bronchoscopic flushing should be done to aspirate the mucous secretions and keep the airway open to improve the efficacy of drugs. IPA patients are mainly treated with antifungal drugs. Amphotericin B is the drug of choice, see “Cryptococcosis” for usage and dosage. Rifampicin can also be used in combination, 450mg/d orally on an empty stomach. The combination of the two has a synergistic effect. Flucytosine may also be used. Itraconazole (ifraconazole) has strong antifungal activity and has good efficacy against Aspergillus infections, with dosage of 200mg/d increasing to 400mg/d in 1 to 2 doses. For patients with intractable or recurrent, invasive pulmonary aspergillosis, partial pneumonectomy can be performed if the lesion is limited. 3, care Strengthen protective measures, such as the need to wear a mask when working in dusty places, timely treatment of eye and skin trauma, try to eliminate or reduce the impact of various predisposing factors, and actively treat chronic diseases.