Automatic starting baby-pacifying apparatus

The utility model relates to an automatic starting baby-pacifying apparatus, which is connected with an immediate reaction circuit on the basis of the general radio-receiver recorders, wherein, the immediate reaction circuit comprises a power circuit, a tonal discrimination circuit, an amplifying circuit, an A/D converting circuit, a timer circuit, a function selector and a power sense circuit. The immediate reaction circuit can cause the baby-pacifying apparatus to switch on a sounder when the babies cry. Thus, the babies' mood can be quickly pacified and stabilized to enable the babies to grow in an environment full of safe feelings. The nursing people need not to go and back for pacifying the babies and thus the physical strength consumption is reduced.