Too much oxytetracycline at one time is easy to cause vomiting, diarrhea and other adverse reactions, may indirectly cause potassium deficiency, need to follow the doctor’s instructions for reasonable use of medication. Overdose of oxytetracycline may cause nausea, vomiting, abdominal distension, diarrhea, epigastric discomfort, pancreatitis, esophagitis, esophageal ulcers, hepatotoxicity, nephrotoxicity allergic reactions, hemolytic anemia, thrombocytopenia headache, optic nerve papillary edema and other adverse reactions. May cause potassium loss if vomiting and diarrhea are severe. Hygromycin is contraindicated in individuals with a history of tetracycline allergy. Echinococcus can be used for mycoplasma infection, rickettsial disease, chlamydial infection, brucellosis, return fever, cholera, plague, rabbit fever, soft chancre, etc. The use of Echinococcus should be rationally under the guidance of a doctor.