After a cat suffers from heat stroke, the following methods should be used for first aid: moving the environment, cooling the body, replenishing body fluids, and seeking medical attention in time.

1. Transfer environment: If a cat suffers from heatstroke under the scorching sun outdoors, the cat should be quickly moved to a ventilated and cool place to avoid direct sunlight. If the cat is indoors, turn on the air conditioner or fan to lower the ambient temperature.

2. Body cooling: Take ice cubes or ice packs, wrap them in towels or clothes and put them next to the cat to quickly lower the cat's body temperature. Do not bring ice cubes or other unwrapped items into direct contact with the cat's body!

3. Replenish body fluids: Heat stroke can cause body fluid loss and even lead to electrolyte imbalance. If the cat's symptoms of heatstroke have improved, he can drink water by himself. You can pour an appropriate amount of cold boiled water into the food bowl. The temperature should not be too low.

4. Seek medical attention promptly: If the above measures are less effective, or problems such as convulsions or coma occur, the pet should be sent to the hospital immediately for professional treatment.