To provide a system for controlling a plurality of drying devices, each being mounted in a corresponding place, by using networks such as Internet and Wi-Fi, the drying devices suitably drying vegetables and fruits.SOLUTION: Drying devices 1a-1d include: means for measuring air temperature and humidity in the outside; means for measuring temperature and humidity in the device; means for measuring a degree of dryness in a food, the object to be dried; and transmitting means 31a-31d for transmitting a driving state in the device. A management server includes: receiving means for receiving the driving state in the device, and storing means for storing control data for suitably drying a target food, wherein the management server: receives information on temperature in the outside, humidity in the outside, temperature in the device, humidity in the device, and a degree of dryness of the target food; retrieves the storing means; reads out the control data for suitably drying the target food; transmits the control data to the drying device 1a-1d; and drives and controls a fan and a heater in the drying device and a plurality of valves in a circulation duct.SELECTED DRAWING: Figure 1【課題】野菜類、果実類の乾燥を最適に行う乾燥装置に係り、特にインターネットやワイファイ等のネットワークを使用して、各所に設置された複数の乾燥装置の制御をセンタのサーバによって管理する制御システムを提供する。【解決手段】乾燥装置1a~1dは、外気温度及び湿度測定手段と、装置内温度及び湿度測定手段と、乾燥処理対象である食品の乾燥度計測手段と、装置内の駆動状態を送信する送信手段31a~31dを備える。管理サーバは、装置内の駆動状態を受信する受信手段と、対象食品の乾燥処理を最適に行う制御データを記憶する記憶手段を備え、外気温度、外気湿度、装置内温度及び装置内湿度、更に対象食品の乾燥度の情報を受信手段によって受信し、記憶手段を検索し、対象食品の乾燥処理を最適に行う制御データを読み出し、乾燥装置1a~1dに制御データを送信し、乾燥装置内のファン、ヒータ及び循環ダクト内の複数の弁を駆動制御する。【選択図】図1