A cat with pus and yellow eye droppings in one eye that cannot be opened may be caused by conjunctivitis, keratitis, internal heat, feline nasal congestion, feline distemper, etc. If the cat is in poor spirits, vomiting and diarrhea, etc., it may be caused by Feline distemper; if the cat has nasal congestion and purulent nasal discharge, it may be feline nasal congestion; if the cat has no other abnormality and only has purulent discharge from the eyes, it is usually eye inflammation; it is best to take the cat to the pet hospital for examination Next, confirm the cause and then carry out targeted treatment.