Abstract: An apparatus (B) for reanimating new-born children with at least two stages provided with an inhaling pressure controlling device. In this apparatus during breathing by blowing pressure, a breathing is possible according to "IPPV+PEEP and CPAP". The breathing apparatus (B) is of a simple construction and affords high safety for the patient. The breathing apparatus (B) has in a first breathing stage a water column (2) the maximum pressure of which corresponds to the maximum inhaling pressure. In the second breathing stage, a choke is connectable to the water column (2) of the first stage. In one embodiment the choke (6) is removable, in another embodiment it is made of a water column (32) connected in series. With the second stage higher limited blowing pressures may be used for the lungs.