[Problem] To provide an agricultural house environment adjusting system which is provided with a controller capable of using only a required function at a required time, and in which a plurality of devices can be controlled from a single place. [Solution] The present invention has: an agricultural house 10 in which three sensors of a temperature sensor 11, a humidity sensor 12, and a carbon dioxide sensor 13 are installed; environment adjusting devices 20 such as fine mist apparatuses, lighting apparatuses, ventilation windows 21, light shielding curtain 22, a heater 23, and CO2 generation device 24 which are installed inside the agricultural house; and a portable terminal 40 which can be connected via wireless LAN to a controller 30 having contact output units that can be connected, via cables 51-54, to up to four randomly selected environment adjusting devices from among environment adjusting devices, wherein there is provided, on the portable terminal side, a terminal on which a numerical value measured from the three sensors can be seen, and a total of 16 combinations can be made by selecting, from the terminal, a temperature, humidity, carbon dioxide, and deficiency of saturation when a preset condition is satisfied and turning on or off the functions of some or all among the maximum of four environment adjusting devices connected by the cables.Le problème décrit par la présente invention est de fournir un système de modulation des conditions régnant dans une serre agricole comportant un dispositif de commande capable d'utiliser uniquement une fonction requise à un moment requis, et dans lequel une pluralité de dispositifs peuvent être commandés à partir d'un seul endroit. La solution selon la présente invention comprend : une serre agricole (10) dans laquelle sont installés trois capteurs : un capteur de température (11), un capteur d'humidité (12) et un capteur de dioxyde de carbone (13) ; des dispositifs de modulation des conditions (20) tels que des brumisa