The invention discloses a technology of direct reduction of nickel-iron particles from laterite-nickel ores in a rotary kiln, comprising the steps of mixing the laterite-nickel ores, carbon reductant and limestone, then briquetting the mixtures into mixed pellets on a briquetting machine; sintering the mixed pellets through a preheating section and removing crystal water in the rotary kiln, reducing nickel elements at a transition section, and then entering into a sintering section to reduce iron elements and the nickel elements and metal particles grow up. Wherein, the temperature of the sintering section near the transition section is controlled within such scope that the materials are kept in solid state, and the kiln ringing can be prevented while keeping the metal reduction temperature; the temperature of the sintering section located at a kilneye is controlled within such scope that the materials are kept in half-molten state. Since the kilneye of the rotary kiln is in a throat structure, heat is uneasy to dissipate, in favor of reduction and enrichment of metal; even sometimes minor ringing occurs, the previous ringing can also be easily removed under the rolling effect of subsequent materials, so that the technology disclosed by the invention plays a foundation for continuous production of direct reduction, and the reduction efficiency of the rotary kiln is improved.