Azithromycin has not been studied in pregnant women, but has not been found to affect the fetus in current studies, and can be used routinely as prescribed by the doctor, and the dosage varies by dosage form. The oral dosage forms of azithromycin include tablets, suspensions, plain capsules, soft capsules, enteric capsules, enteric-coated tablets, granules, powders, and dispersible tablets. 1. Tablet, suspension: Sexually transmitted diseases caused by sensitive gonococcus, Haemophilus ducreyi, Chlamydia trachomatis only need a single oral dose of 1000mg; other infections can be 500mg once a day for three days, or 500mg orally on the first day, 250mg once a day on the second to fifth days. 2. Ordinary capsule, soft capsule, enteric-coated capsule, enteric-coated tablet, granule: take one hour before meal or two hours after meal. Sexually transmitted diseases caused by Chlamydia trachomatis or sensitive Neisseria gonorrhoeae only need a single oral dose of 1.0g; other infections can be 0.5g on the first day of the meal, 0.25g on the second to fifth day of the meal, or 0.5g on the first day of the meal, for three consecutive days. 3. Dispersible: sensitive gonococcus, Haemophilus ducreyi, Chlamydia trachomatis caused by sexually transmitted diseases as long as a single oral dose of 1.0 g. HIV-infected patients for the prevention of Mycobacterium avium intracellulare complex infections can be used once a week, each time 1.2 g. Other infections can be used once a day for three days, or once a day for three days, or can be the first day of 0.5 g, the first 2-5 days once a day, 0.25 g. 4. Dispersible tablets: sensitive gonococcus, Chlamydia trachomatis caused by sexually transmitted diseases as long as a single oral dose of 1.0g. It is recommended that patients who are not feeling well should consult a doctor in time, and follow the doctor’s instructions for symptomatic medication.