A provisioning device which provides, in advance, setting information necessary for joining in a wireless network to each of a plurality of first field devices (2, 3, 4) which are to newly join the wireless network to exchange data with an existing field device that is installed in a plant, the provisioning device comprising: a storage unit storing a white list in advance which contains unique information of the first field devices (2, 3, 4) and the setting information for the first field devices such that the unique information and the setting information are correlated with each other; a device information acquiring unit for acquiring the unique information from each of the first field devices (2, 3, 4) by wireless communication; an extracting unit for extracting, from the white list, the setting information that is correlated with the acquired unique information; a setting unit for sending the extracted setting information to the corresponding first field device (2, 3, 4) by wireless communication; and the provisioning device further comprising: a successive acquiring unit that continues to send request signals for acquiring the unique information from each of the first field devices (2, 3, 4) until provisioning for all of the first field devices on the white list is finished, by controlling the device information acquiring unit, wherein the unique information includes a device tag indicating a type of the first field devices (2, 3, 4) and a position of the first field devices (2, 3, 4) in the plant, and wherein the setting information includes at least one of: a network ID of the first field devices (2, 3, 4) on the wireless network; a device address, on the wireless network, of a system manager device that is requested to approve joining of the first field devices (2, 3, 4) in the wireless network; and a join key that is used in authenticating the first field devices (2, 3, 4) when the first field devices (2, 3, 4) request joining in the wireless network. a storage unit storing a white list in advance which contains unique information of the first field devices (2, 3, 4) and the setting information for the first field devices such that the unique information and the setting information are correlated with each other; a device information acquiring unit for acquiring the unique information from each of the first field devices (2, 3, 4) by wireless communication; an extracting unit for extracting, from the white list, the setting information that is correlated with the acquired unique information; a setting unit for sending the extracted setting information to the corresponding first field device (2, 3, 4) by wireless communication; and the provisioning device further comprising: a successive acquiring unit that continues to send request signals for acquiring the unique information from each of the first field devices (2, 3, 4) until provisioning for all of the first field devices on the white list is finished, by controlling the device information acquiring unit, wherein the unique information includes a device tag indicating a type of the first field devices (2, 3, 4) and a position of the first field devices (2, 3, 4) in the plant, and wherein the setting information includes at least one of: a network ID of the first field devices (2, 3, 4) on the wireless network; a device address, on the wireless network, of a system manager device that is requested to approve joining of the first field devices (2, 3, 4) in the wireless network; and a join key that is used in authenticating the first field devices (2, 3, 4) when the first field devices (2, 3, 4) request joining in the wireless network. a successive acquiring unit that continues to send request signals for acquiring the unique information from each of the first field devices (2, 3, 4) until provisioning for all of the first field devices on the white list is finished, by controlling the device information acquiring unit, wherein the unique information includes a device tag indicating a type of the first field devices (2, 3, 4) and a position of the first field devices (2, 3, 4) in the plant, and wherein the setting information includes at least one of: a network ID of the first field devices (2, 3, 4) on the wireless network; a device address, on the wireless network, of a system manager device that is requested to approve joining of the first field devices (2, 3, 4) in the wireless network; and a join key that is used in authenticating the first field devices (2, 3, 4) when the first field devices (2, 3, 4) request joining in the wireless network. a network ID of the first field devices (2, 3, 4) on the wireless network; a device address, on the wireless network, of a system manager device that is requested to approve joining of the first field devices (2, 3, 4) in the wireless network; and a join key that is used in authenticating the first field devices (2, 3, 4) when the first field devices (2, 3, 4) request joining in the wireless network.