The invention relates to a new method for two-step process preparation of nickel sulfide. The new method comprises the following steps: transferring a water and urea mixed solution of nickel chloride or a water, ammonia water and ethylene glycol mixed solution of nickel chloride into a high-pressure kettle, performing heating reaction at the temperature of 120-160 DEG C for 8-16h, filtering and washing a generated nickel hydroxide precipitate, and drying to prepare a nickel hydroxide precursor; and then dispersing into ethylene glycol, performing ultrasonic dispersion, adding sodium sulfide nonahydrate, transferring into a reactor, performing reflux reaction at the temperature of 160 DEG C for 12-24h, filtering, washing, and performing vacuum drying for 10-12h to prepare nickel sulfide. The new method provided by the invention has the advantages of simple production process, easiness in control of reaction conditions, no need of using a template agent and a surfactant, environmental friendliness and good consistency of the obtained product, is conductive to production of nickel sulfide, and has important practical significance.