Baby crib with height-adjustable crib board

The utility model discloses a crib capable of adjusting the height of a crib board, which belongs to the technical field of cribs and is characterized by comprising a bottom supporting plate, the crib board is arranged at the top of the bottom supporting plate, and a protective frame is fixedly connected to the top of the bottom supporting plate. In order to solve the problem that at night, a caregiver needs to frequently get up to take care of infants, the caregiver purchases a baby crib as high as an adult bed, and the baby crib needs to be taken care of the baby crib, so that the baby crib is not required to be taken care of the baby crib due to the fact that the caregiver needs to frequently get up to take care of the infants at night. When a user sleeps at night, the baby crib can be placed beside an adult bed, however, the baby crib is only matched with the adult bed with the fixed height, the application range is small, the bed board is too high and has the danger of turning out and falling down along