In the present study,a reference material of kepone in dichloromethane was developed.The qualitative analysis of the raw material of kepone was conducted by gas chromatography coupled with mass spectrometry(GC-MS),as well as infrared spectroscopy(IR),and its purity was characterized to be 99.9% by multi-lab certification with gas chromatography equipped with fire ionization detector(GC/FID).In (20 ± 4) ℃,the solution of kepone in dichloromethane was prepared by weight capacity method,and then followed by the assessment of homogeneity,stability,quantity value.The uncertainties caused in the whole producing processes of the reference material were analyzed and evaluated.