Inhaled medications are the mainstay of asthma treatment and, when used properly, can be effective in controlling symptoms and improving the prognosis of the disease; conversely, they are not as effective as they should be and result in wasted medications. How can these medications be used correctly? The following is a brief introduction to the use of inhaled asthma medications commonly used in outpatient clinics. I. Salbutamol aerosol: 1. Two-step inhalation method: (1) Open the aerosol bottle with one hand, shake it vigorously and then open the nozzle cap; (2) Inhale and try to exhale under the premise of ensuring calm breathing (avoid the nozzle when exhaling), place the nozzle between your teeth, wrap your lips around the nozzle and inhale deeply while spraying the medicine. Then remove the nozzle from the mouth and continue to hold your breath for about 5-10 seconds. After use, wipe the nozzle with a clean paper towel and cover the nozzle cap. Second, budesonide/budesonide formoterol powder inhaler DuPao: 1, how to use – three-step inhalation method (1) pull out: screw loose and pull out the cap, make sure the red handle is underneath; (2) rotate: take straight DuPao, hold the red part at the bottom and the middle part of DuPao, rotate to the end in one direction, and then rotate to the other direction (3) Inhalation: Exhale first (do not exhale into the mouthpiece), place the mouthpiece between your teeth, wrap your lips around the mouthpiece and inhale hard and deep, then remove the mouthpiece from your mouth and continue to hold your breath for 5-10 seconds before resuming free breathing. After use, wipe the mouthpiece with a clean tissue, close and tighten the cap. Please rinse your mouth promptly after inhalation. 2.How can I tell if the inhalation technique is correct? Cover the mouth of the suction nozzle with a dark cloth and follow the three-step inhalation method shown above to make your inhalation action, if you find the powder sticking to the dark cloth, it means your inhalation action is correct. 3.How do I know that I have used all the doses? Every 20 dose units are marked with a number, and every 10 dose units will have an indication line at intervals; the last 10 dose units have a red background, and the appearance of red means that 10 doses are left, suggesting that another dose of DuPont should be prepared in time. Third, salmeterol – fluticasone powder inhaler quasi-nasal: 1, how to use – three-step inhalation method: (1) open Hold the shell (darker color part) in one hand, the other thumb on the thumb handle, push the thumb outward until completely open; (2) push open: push the sliding rod outward to make a “click” sound, that is, loaded with a standard dose of drugs for inhalation, the corresponding display in the dose indicator window, do not randomly toggle the sliding lever to avoid causing waste of drugs. (3) Inhalation: Hold the paracentesis away from the mouth, exhale as much as possible under the premise of ensuring calm breathing (remember not to exhale into the paracentesis), put the suction nozzle into the mouth and inhale the drug deeply and smoothly by the paracentesis; do not inhale through the nose. Take the paracentesis out of your mouth and continue to hold your breath for 5-10 seconds. After each inhalation, place your thumb on the thumb handle and pull backwards to make a “click” sound, indicating that the quasi-inhaler is closed and the slide lever is automatically reset. The paracentesis can be used again for the next suction of the drug. After inhalation, please rinse your mouth promptly. 2.How can I tell if the inhalation technique is correct? Put a dark cloth over the mouth of the suction nozzle and make your inhalation action according to the three-step inhalation method shown above, if you find the powder sticking to the dark cloth, it means your inhalation action is correct. Note: The above aerosol nozzle and powder inhalation nozzle can only be wiped with dry cloth or dry paper on the outer part, water or liquid rinsing is strictly prohibited!