1. Immediately report to the police and seek help: dial the emergency rescue phone number as soon as possible, inform the specific location and situation, and request professional rescue personnel to arrive at the scene as soon as possible.
2. Try to calm and prevent: While ensuring your own safety, try to calm your girlfriend in a gentle tone, telling her that this cannot solve the problem, and try to prevent her from further approaching the danger zone. If communication is ineffective, stay calm and do not forcefully pull to avoid accidents.
3. Follow up care and communication: After the rescue personnel arrive and handle the emergency situation, sufficient care and understanding should be given to the girlfriend. Find a suitable time and place to calmly communicate with her, understand the real reasons and emotional distress behind her jumping into the river, and work together to find a solution to the problem. If necessary, seek help from a psychological counselor.