NOVELTY - Preparing nitrogen-containing graphite hollow carbon microsphere comprises (i) adding melamine powder and formaldehyde solution to water, heating, increasing the temperature to 80-90 degrees C, and stirring to obtain the reaction solution, (ii) placing the reaction solution in a reaction kettle, sealing, reacting for 3-12 hours, naturally cooling, centrifuging, washing the solid phase, and drying at room temperature to obtain melamine resin micro-sphere, and (iii) introducing the product of step (ii) to a quartz tube furnace, introducing high purity nitrogen, increasing the temperature, and cooling.    USE - The micro-sphere prepared is useful in electrochemical supercapacitors, lithium-ion batteries and fuel cells as electrode material or carrier material.    ADVANTAGE - The method does not utilize template agent and catalyst; and is simple, economical, and suitable for large scale production.    DETAILED DESCRIPTION - Preparing nitrogen-containing graphite hollow carbon microsphere comprises (i) adding melamine powder and formaldehyde solution with a concentration of 37% to deionized water, adjusting the pH to 5.5-9, heating to 40-60 degrees C for 10-30 minutes, increasing the temperature to 80-90 degrees C, and stirring for 10-30 minutes to obtain the reaction solution, where the molar ratio of melamine and formaldehyde is 1.5-6:1, (ii) placing the reaction solution in a polytetrafluoroethane with stainless steel hot water reaction kettle, sealing, placing in an oven at 120-200 degrees C, reacting for 3-12 hours, taking out the reaction solution, naturally cooling, separating the obtained product by centrifugation, washing the solid phase with deionized water and then with anhydrous alcohol, and drying at room temperature to obtain melamine resin micro-sphere, and (iii) introducing the product of step (ii) into a quartz tube furnace, introducing high purity nitrogen with a flow rate of 10-100 ml/minute, and speed of 1-10 degrees C/minute, increasing the temperature of quartz tube furnace to 600-800 degrees C for 2-12 hours, and cooling to room temperature.