The present invention relates to a temperature and humidity control apparatus of a dehumidifier for a greenhouse using a smart phone, wherein the apparatus is capable of minimizing the disease and insect damage on crops to improve productivity by remote-controlling the dehumidifier using the smart phone to provide the crops with the optimal temperature in consideration of humidity. The apparatus of the present invention comprises: a plurality of dehumidifiers installed in a greenhouse; temperature and humidity detection units attached to the dehumidifiers to detect the temperature and humidity in the greenhouse; communication units attached to the dehumidifiers to transmit the information, detected by the temperature and humidity detection units, to the outside; and a smart phone connected to the communication units to check the temperature and humidity in the greenhouse in real time and selectively control the dehumidifiers.
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