A gecko that crawls on your hand generally does not need to be immunized. Gecko is a kind of reptile, itself is non-toxic, so gecko if only climbed to the hand, generally will not cause unusual damage to health, naturally do not need to be vaccinated against vaccination. However, if you are bitten or scratched by a gecko, and you have a wound on your hand, you should pay attention to the hygienic cleaning and disinfection of the wound in time to prevent infection. Although the gecko itself is not toxic, the urine produced by the gecko is toxic. Therefore, if an individual’s skin comes into contact with the gecko’s urine, it must be cleaned immediately. If the local skin shows unusual symptoms of discomfort, it is recommended to consult a doctor promptly.