To provide an audio parameter setting system capable of surely performing setting of an audio parameter with reduced labor.

A server control section 210 in an in-vehicle server 200 is equipped in a configuration acquiring section 212, a retrieval request transmitting section 214, an information reception unit 216, and an audio parameter setting section 218. The configuration acquiring section 212 automatically acquires configuration information when an audio system 100 is newly mounted or when the configuration is changed. The retrieval request transmitting section 214 transmits the retrieval request toward a retrieval server. When the product information and vehicle information for the retrieval request are returned, the information reception unit 216 receives them and the audio parameter setting section 218 sets the audio parameter of the audio system 100 from the configuration information acquired from the audio system 100 and their reception information.