In this research, the effect of the Al   2O3 abrasive particles on metal removal rate of the electrochemical grinding machining process was studied. All experimental works were performed at different voltages (9 and 11.5V), different feed rates (6.74, 13.63, 22.55 and, 27.44 Ipm), different electrolyte concentrations (10, 15 and 20 wt. % NaCl), and different depths of cut (0 and 0.1 mm). The abrasive particles powder weight percentages were varied from 2.5 to 7.5. In order to study the effect of the abrasive particle powder, the results of the electrochemical grinding (ECG) were compared with the results of the abrasive electrochemical grinding (AECG). All experiments were performed for K110 alloy steel. The metal removal rate was determined by weighing the samples before and after machining, then dividing by the time of machining. Digital weight balance with 0.001g accuracy was used. The results revealed that the metal removal rate increases by increasing the weight percentage of the Al   2O3 abrasive particles up to 5 wt. % then decreases. In addition, the effect of the abrasive particles was decreased by increasing the feed rate, salt electrolyte concentration and decreasing the depth of cut. The results of the electrical current show that the electrical current decreases at a percentage more than 5 wt. % Al   2O3.