NOVELTY - Preparing fenofibrate (I) by remote monitoring using intelligent temperature controller, comprises e.g. stirring toluene, isopropyl alcohol (III), concentrated sulfuric acid and fenofibric acid (II), refluxing, and remote monitoring the reaction, washing obtained esterified product, carrying out solid-liquid separation, adding aqueous sodium hydroxide into obtained stock solution, and separating unreacted fenofibric acid and basic aqueous layer, then washing stock solution with hot water, distilling the separated organic phase, adding isopropanol and medicinal activated carbon, and refluxing.    USE - The method is useful for preparing fenofibrate by remote monitoring using intelligent temperature controller (claimed).    ADVANTAGE - The method: has high product yield of more than 85%, low production cost, and high efficiency; and is environment-friendly, and suitable for industrial production.    DETAILED DESCRIPTION - Preparing fenofibrate of formula (I) by remote monitoring using intelligent temperature controller, comprises (i) adding toluene, isopropyl alcohol of formula (III) and concentrated sulfuric acid into a four-necked flask fitted with an electric stirring rod, thermometer, reflux condenser, water separator and feeding port, then adding fenofibric acid of formula (II) while stirring, where amount of toluene is 1-1.4 times the amount of fenofibric acid, amount of isopropanol is 30-50% of the amount of fenofibric acid, amount of concentrated sulfuric acid is 10-15% of the amount of fenofibric acid, (ii) stirring with electric stirring rod at a speed of 400-500 revolutions/minute, refluxing at 86-110 degrees C, separating the water generated in the reaction by water separator, where toluene, small amount of water and isopropanol flows back to four-necked flask through reflux condenser, then stopping heating and stirring when the anhydrous reaction re-enter the water separator, maintaining the reaction temperature at 86-110 degrees C, and remote monitoring the reaction by uploading real-time temperature to a PC, (iii) washing the obtained esterified product with 60-70 degrees C hot water, removing impurities, carrying out solid-liquid separation, retaining upper material and mixture of toluene, removing lower water and impurities, (iv) adding 5% aqueous sodium hydroxide solution into the above stock solution of retained upper material and toluene mixture, stirring and separating unreacted fenofibric acid and basic aqueous layer, (v) neutralizing the basic aqueous layer to pH of 3-4 by adding hydrochloric acid, filtering, drying and recycling fenofibric acid as raw material, (vi) washing stock solution with 60-70 degrees C hot water after separating aqueous layer, carrying out solid-liquid separation, taking upper level materials and toluene combined organic phase, and removing lower alkali completely, (vii) placing the separated organic phase in a three-necked flask fitted with stirring rod, thermometer and condenser, removing water and part of toluene by atmospheric distillation, vacuum distilling at 115 degrees C and vacuum of -0.08-0.1 MPa to remove toluene completely, and (viii) cooling to 60 degrees C, adding isopropanol (2.5-3 times the amount of fenofibric acid), medicinal activated carbon (1. 5-3% of the amount of fenofibric acid), heating and refluxing for 30 minutes, hot filtering, and cooling to 15 degrees C to obtain fenofibrate, where the intelligent temperature control system is composed of a processor, which is connected to a heater, an alarm for monitoring the esterification reaction, and a temperature sensor.