An automatic livestock raising device is provided, which detects estrus and conception by using the feature that the behavioral trait changes. An automatic livestock raising device comprises: an acceleration sensor part(100) which measures the behavioral trait of the domestic animals and wirelessly transmits it; a receiving antenna part(200) delivering the information that is received by the acceleration sensor part to the main controller part; a main controller part(300) which understands the estrus or the conception information of the domestic animals and delivers it to the central processing unit; and a central processing unit(400) which outputs the information delivered to the main controller part and notifies the user terminal(500) of it.
