The invention discloses an efficient CIK amplifying method, in particular to a method for 
cell populations, namely 
cytokine-induced killer cells utilizing in-vitro 
cell factors for efficiently inducing mononuclear 
cell expressions CD3 and CD56 of 
peripheral blood, wherein the cell populations have killing functions. The cultivation method for the CIK efficiently expressing CD3+CD56 comprises the following steps that the 
peripheral blood of a healthy person or a patient is collected in a sterile mode, after the 
peripheral blood is diluted through a 
saline solution with the same volume, a 
Ficoll lymphocyte separating medium is used for separating mononuclear cells, in the CIK cell inducing process, CD3 
monoclonal antibodies (CD3mAb), CD28 
monoclonal antibodies (CD28mAb), 
interferon-gamma (IFN-gamma), 
interleukin-2(IL-2) and 
interleukin 1alpha (IL-1alpha) are added, cultivation is carried out for 13-16 days to obtain cells, a CIK 
cell preparation is prepared, and 
flow cytometry detection and 
microorganism detection are carried out. According to the CIK cultivation method, the CIK number can be increased to be 6*10<9> or over 6*10<9> in two weeks, the 
cell survival rate can be increased to be 99% or over 99%, and the double-positive proportion of the CD3+CD56+cells reaches 30% or over 30%.