The invention relates to a wireless keeper system and method, which comprise a baby's end monitoring apparatus. The baby's end monitoring apparatus comprises an image transducer module, an image acquisition process module, a microphone, a voice acquisition process module, a mainframe wireless data communication module, a mainframe code comparison process module and a power source management module connected with all the modules; a parent's end monitoring apparatus comprises a slave machine wireless data communication module, a voice player process module, a loudspeaker, an image display process module, a display screen, a slave machine code comparison process module and a power source management module linked to all the modules; the baby's end monitoring apparatus is connected with the parent's end monitoring apparatus through a wireless data linkage; the method comprises code comparison process, continuously receiving and playing information from the baby's end apparatus, setting automatic circulation monitoring of a plurality of baby's end apparatus, and circularly receiving and playing all information from baby's end apparatus. The wireless keeper system and relevant method has the advantages of being convenient and flexible, system working performances being reliable, and adapting scope being rather expansible, thus being applicable in such places as household, baby-care rooms, etc.