Baby box is needed for baby safety and for baby's physical health maintenance. A baby box equipped with a mat is a comfortable baby bed. Several conditions make babies feel uncomfortable such as bedwetting. If left unchecked, it can irritate the baby's skin inducing disease including eczema, spots, and other skin irritation. Based on the problems, a detection device for baby bedwetting and crying was made. Baby bedwetting devices used moisture sensor and water sensor placed under the mattress. The baby's urine is absorbed by the baby's bed and touches the water sensor. By using the system, it is expected that the baby can sleep well and there is no irritation to the skin