The four knowledge of preventing drowning safety are: knowing the child's whereabouts, knowing the content and scope of activities, knowing the child's companions, and knowing the time for the child to go home. Educate parents of students to earnestly fulfill their guardianship responsibilities, do a good job in children's safety education and supervision, and effectively ensure the healthy growth of children.

Safety against drowning:

1, swimming is prohibited without permission.

2. You are not allowed to swim with others without authorization.

You are not allowed to swim without parents or teachers.

You are not allowed to swim in unfamiliar waters.

5, are not allowed to swim in the waters without safety facilities and ambulance personnel.

6. Non-aqueous students are not allowed to go into the water for rescue without authorization.

Children's drowning protection 8 points:

1, don't swim in the water without permission, parents are always in charge.

2. Insist that children wear high-quality floating objects.

3. Ask the child to exercise before entering the water to avoid cramps and other phenomena.

Don't feed the children in the water, they may choke.

5. Educate children not to play with each other in the water to prevent choking.

6. Teach children to learn swimming and skills such as cardiopulmonary resuscitation.

7. Don't swim in unfamiliar waters without safety facilities and rescuers.

8. Don't go into the water without knowing the water and the underwater situation.