The main objective of this study is to develop an innovative electrolysis system to improve the removal of ammonia and recovery of nutrient elements from water. The system consists of a Magnesium (Mg) electrode, a Platinum (Pt) electrode and a pulse reverse power. When the voltage between Mg and Pt electrode was positive, the sacrificial magnesium anode released Mg²⁺ which reacted with ammonia and phosphate in solution to generate struvite precipitation. However, when the voltage between Mg and Pt electrode was turned negative, ammonia was removed by electrochemical oxidation. The duty of cycle, electric voltage, frequencies of pulse reverse and the molar ratio of N/P are the main effect factors on the treatment efficiency. The experimental results showed that the removal rate of ammonia in wastewater could reach 88.5%, meanwhile, about 98.2% the phosphate was recovered after 3.0 h reaction at electrolysis parameters of 14.0V, 0.04 Hz, and 45% duty cycle. The precipitate in solution was analyzed by scanning electron microscopy (SEM) and X-ray diffraction (XRD). This pulse reversed system, which provided cathodic and anodic pulse voltage, can increase ammonia removal dramatically in comparison to conventional electrochemical process.