Recognizing whether a child has already taken a sleeping pill can be identified in several ways: 1. Look to see if the sleeping pill has been touched. If sleeping pills are kept in the home, parents should keep them in a place where children can’t find them as much as possible. If children have been exposed to sleeping pills, and found that the dose of sleeping pills has been reduced, we should be highly suspicious of having taken sleeping pills. 2, look at the mental state of children. Children who have taken sleeping pills will have a poorer mental state, and even appear to always want to sleep, long time can not wake up. 3, can be manifested in the number of breaths significantly reduced, children will have nausea, vomiting and other symptoms. If children are found to have the intake of sleeping pills, they should be taken to the hospital in time for treatment, such as the application of naloxone.