Transparent water thrown out of a cat’s ears may be caused by ear water, ear inflammation, fungal and bacterial infection, or ear mites. It is best to check the cat’s ears to see if there is redness, swelling, pus, ulcers, etc. , if there is a similar situation, you need to take the cat to the pet hospital for examination and treatment to avoid aggravation of the condition; if there is only transparent water and no other abnormalities, then there is no need to worry, just wipe the water off gently with a cotton swab.