Method of saving people from boat turned upside down by punching holes

The invention discloses a method of saving people from a boat turned upside down by punching holes. The invention is characterized by comprising the following steps: a, carrying out safety assessment; b, stabilizing the floating conditions of a boat turned upside down; c, conveying fresh air into the boat to allow people trapped in the boat to keep breathing; d, punching holes to save people, that is, punching holes in the hull bottom of the boat turned upside down with a chain saw and rapidly helping people trapped in a cabin out directly from above. The invention enables the conventional practice that rescue workers could do nothing to help people trapped in boat turned upside down on the sea but resign the trapped people to their fate to be totally changed and enables the trapped people to be rapidly rescued and be helped out directly from above; the method has strong operationality, a high success rate up to 100% and enables offshore emergency rescue technology to have great development.