The exact amount of time a snake bite is past the danger period depends largely on whether the snake is venomous or non-venomous. If the bite is from a non-venomous common snake, there is usually no danger period. If you are bitten by a venomous snake, it may take about 3~5 days to pass the danger period after emergency treatment. 1. Non-venomous common snakes: If bitten by a non-venomous common snake, there is generally no danger period, and it is sufficient to pay attention to observation for 12 hours. If you find any abnormal condition, you should cooperate with professional doctors for emergency treatment. 2. Venomous snakes: If bitten by a venomous snake, the time for the toxin to strike is not fixed, it may take a few minutes, half an hour or a few hours before it strikes, and usually after emergency treatment, it can pass through the danger period in about 3~5 days. It should be noted that once bitten by a venomous snake, it is recommended to seek professional medical help as soon as possible in a regular hospital, including injection of snake venom serum, clearing of wounds, detoxification, etc., but also close observation, so as not to cause sequelae, do not procrastinate or self-treatment, in order not to cause serious consequences.