Emergency measures for a hamster's food poisoning mainly include inducing vomiting, providing plenty of water, feeding diluted saline solution, and seeking immediate veterinary care.

Inducing Vomiting and Providing Ample Water
If you notice that a hamster has ingested something it shouldn't, closely observe its condition as soon as possible. Try to induce vomiting and offer a large quantity of water to help dilute the toxic substances within its body.
Feeding Diluted Saline Solution
Dilute the saline solution and then attempt to feed it to the hamster. If the hamster is reluctant to drink, you may need to administer it by force. This can have a certain detoxifying effect, but it's still crucial to take the hamster to the vet promptly.
Seeking Veterinary Care
Once you detect symptoms of food poisoning in the hamster, rush it to the veterinary clinic immediately. The vet may use medications like gastric mucosa protectants, intestinal - regulating drugs, and nutritional supplements for treatment.
Preventive Measures
Avoiding Accidental Ingestion
Normally, be vigilant to prevent the hamster from accidentally consuming inedible items, such as fruit pits.
Maintaining the Hygiene of Hamster Feed
Ensure that the hamster feed remains dry. Replace it regularly and refrain from using feed that has become damp.
Personal Hygiene
Wash your hands before handling the hamster to prevent harmful substances from adhering to the hamster and being licked into its stomach.
By implementing these measures, you can effectively respond to and manage cases of hamster food poisoning, ensuring the hamster's health and safety.