This is a situation worth considering. My suggestions are as follows: 1. Although I don’t know the person who fell into the water, life is very important. If you have the ability to rescue, you should do your best to rescue. This is the basic humanitarian spirit. But you must also consider your own safety, and you can't risk your life for rescue. 2. If you can't swim, the best way is to call an emergency number immediately to seek professional rescue. You can call the police for help from the fire and police, who have professional equipment and skills for water rescue. This is the safest and most efficient method. 3. If professional rescue is too late, you can find long trees, sticks, etc. for the drowning person to catch, and at the same time seek help from others, especially those who are good at swimming. Coordinated rescues increase success rates and ensure safety. 4. Whatever method is used, remain calm. Panicking not only does not actually help, it can lead to putting yourself in a dangerous situation. It is also necessary to call on those who fell into the water to remain calm and avoid unnecessary struggle, so as not to accelerate physical exertion. 5. While waiting for professional rescue, the person who fell into the water should be constantly called and observed. If found missing or unconscious, immediately report to professional rescuers to guide the specific location and condition. This also helps rescuers start search and rescue as quickly as possible. Therefore, even though you don't know the person who fell into the water and can't swim, you should remain sensible at this time, call the emergency number quickly for help, and provide as much help and support as possible on the spot. This is not only respect for life, but also a kind of love and mutual assistance between people. Every life is equally precious and worthy of our best efforts to save. (Translated into English by machine)