The invention discloses a detection method for the expression of a GPR120
gene based on eGFP. The detection method comprises the following steps: inserting an eGFP fragment to the specific site TAA of the termination codon of the GPR120
gene by using
CRISPR / Cas 9 technology so as to obtain a
transgenic model mouse with eGFP-labeled GPR120 positive cells; and carrying out excitation by using a
fluorescence analyzer and determining the
fluorescence intensity of the positive cells of the mouse. The method carries out real-time monitoring on the expression of the GPR120
gene so as to control and reduce errors among groups, guarantee the reliability of results and compensate for and overcome the problems of variability caused by comparison of different groups of histocytes and incapability of monitoring the changes of
gene expression at a
living cell level in the prior art. According to the invention, the expression level of the GPR120 gene can be immediately determined after collection of cells, and operations and reactions like
RNA extraction, inverse transcription and PCR are omitted, so detection of the expression of the GPR120 gene is simpler.