The invention discloses a multi-shaft common-rail pulse liquid micro-refinement apparatus. The apparatus comprises a refinement chamber, above two pipelines and a high pressure pump; the refinement chamber is provided with the above two pipelines, one ends of the pipelines are positioned outside the refinement chamber, have three-way structures, and are connected with the high pressure pump and a slurry raw material tube respectively, the slurry raw material tube is provided with a valve, the other ends of the pipelines are positioned in the refinement chamber and are provided with nozzles, the central shafts of the nozzles intersect in the refinement chamber, and the refinement chamber is provided with a material outlet. The apparatus which rapidly breaks and refines the material through utilizing the superposed energy has the characteristics of unique technology, compact structure, stable performances, strong effect, multifunction and the like. The apparatus is mainly used for the controllable refinement treatment of the material in a liquid state, and has the compounding, surface treatment and emulsification functions, and the obtained treated product has a smallest particle size reaching above 1nm nanometer level dimension, has particle size specification uniformity reaching above 80% and an improved functionality.