The difference between bio-vaccine and Kexing vaccine mainly lies in the manufacturer, vaccine effect, vaccination method and so on. 1. Manufacturer: China National Pharmaceutical Group is the manufacturer of Beijing Biological Vaccine, and Beijing Kexing Zhongwei Biotechnology Co., Ltd. is the manufacturer of Kexing Vaccine, the technology and process of the two companies are not the same. 2. Vaccine effect: the effect of the vaccine produced by the two companies is somewhat different, take the new crown vaccine as an example, in the second phase of the clinical trial results of the analysis of the comparison of the neutralizing antibody titer of Beijing Biological is better than the Kexing, the results of the third phase of the clinical trial showed that China’s Kexing new crown vaccine effective rate of 78%, while the Beijing Biological vaccine effective rate was 79%. 3. Vaccination method: some vaccines produced by the two manufacturers are not exactly the same vaccination method, such as the vaccination of the new crown vaccine, the shortest interval between the first and second doses of the Kexing new crown vaccine is lower than that of the Beijing biological vaccine, the interval between the second injection of the Beijing Kexing CWV is ≥14 days, and the interval between the second injection of the Beijing biological products is ≥21 days. There may be other differences between the biological and Koxing vaccines; consult your physician for information.