Dust mite drops is an immunotherapeutic drug that can produce specific immunity in patients who are allergic to dust mites and relieve the symptoms of allergy to dust mites, and is used for allergic asthma and allergic rhinitis caused by dust mite allergy. May have side effects such as dizziness, rash, runny nose, cough, asthma, drowsiness, mild diarrhea, headache, fatigue. Not suitable for children under 4 years old. Dust mite skin prick test should be done first to clarify the diagnosis before taking the medicine. Alcohol consumption is prohibited while taking the medicine. If combined with antihistamines, mast cell stabilizers and other anti-allergy drugs, the dose of the drug should be adjusted when these anti-allergy drugs are discontinued. It is contraindicated in the following conditions: acute attacks of asthma; respiratory tract infections or inflammation with fever; severe inflammatory diseases, acute or chronic; taking beta-blockers or ACE inhibitors; autoimmune diseases; multiple sclerosis; active tuberculosis; severe renal insufficiency; severe mental disorders. Use with caution in acute and chronic cardiovascular insufficiency. If you need to use the drug patients, please under the guidance of the doctor strictly follow the instructions of the doctor to take medication, do not self-medication.