To attain betting in an easier way by using effectively the information that is acquired from a betting center device.

The device is provided with a designated betting mode and data deletion/betting move. In a designated betting mode (1), the betting numbers included in a designated range of scale factors can be extracted and betted. In a designated betting mode (2), the horse serial numbers of a designated popular combination of a winning system can be extracted and betted. In a data deletion/betting mode (1), the betting numbers can be chosen and betted from the horse weight information. In a data deletion/betting mode (2), the betting numbers can be chosen and betted from the entered horse list information and the horse weight information. In the designated betting mode (1), for example, '10-15 times' and '20-25 times' are set as the retrieval conditions 1 and 2 respectively to extract the horse serial numbers are extracted from the acquired horse serial odds information in those scale factor ranges. Then the extracted horse serial numbers are displayed.