A sound information providing system, which can eliminate inappropriate sound information, is provided. The sound information providing system includes a receiving unit that receives a phone number for identifying a cellular phone of the destination side and a phone number for identifying a cellular phone of the source side. Both information is transmitted from the cellular phone of the source side, a sound information requesting unit for requesting sound information based on the received phone number. A sound information monitoring unit monitors the sound information are output in response to the request. It eliminates inappropriate sound information, and selects the sound information conforming to a predefined condition. A transmitting unit transmits the selected sound information to the cellular phone.