Boron-doped diamond (BDD) is established as a superior material for electrodes in sensors and biosensors due to its wide potential windows and extremely low capacitance as well as high stability against chemical and physical changes. Beside conventional electrochemistry applications, BDD is also developed as an electrode for electrogenerated chemiluminescence (ECL). The chemiluminescence light is triggered by a reduction oxidation reaction of electro-reactive species on the electrode’s surface when a potential is applied. Since it is created from a fusion of light response and electrochemical stimulus, the ECL lights (signals) have outstanding properties, namely significantly low background measurement, great sensitiveness, wide range of dynamic, small amount sample for analysis as well as fast measurement process. Therefore, the ECL is considered to be very potential for developing selective and selective sensors and biosensors. In this work, the advantageous properties of BDD as the electrode to initiate the ECL phenomenon will be discussed together with its potency to develop selective detections of some chemicals.