The utility model discloses an intelligent detection system for a communication optical cable splice closure, and the system comprises a double-sided capacitive sensor unit which is connected with thedetected optical cable splice closure, and obtains the projection information of the internal capacitance distribution condition of the communication optical cable splice closure; The capacitance measurement and data acquisition unit is used for measuring and processing the capacitance value acquired by the double-sided capacitance sensor unit and sending the capacitance value to the upper computer; And the upper computer is used for reconstructing the internal cross section of the communication optical cable splice closure. According to the technical scheme of the utility model, the non-invasive electrical capacitance tomography technology is utilized. Pole tower free of manual climbing, the inside of the splicing box does not need to be opened and checked; By applying the independentlyresearched and developed double-sided capacitive sensor and utilizing a computer image reconstruction algorithm, image reconstruction of corrosion of optical fibers and parts in the junction box can be completed, uninterruptible power intelligent detection of internal damage of the pillow-type optical cable junction box is realized, the line operation and maintenance cost is effectively reduced, and the line operation and maintenance efficiency is greatly improved.