Since the second half of 2015, the price of pork has come into a new round of rising cycle, especially from January to April of 2016, pork prices continued rising. Excessive rising of pork prices sparks people's concern about CPI rising. It is of practical significance to discussing the fluctuation cycle of pork price and its relationship with CPI. In this context, we do empirical research on pork cycle and price fluctuations with CPI relationships. From January 2000 to March 2016, based on a total of 195 samples, using Eviews6.0 metrology software, we draw the following conclusions: fluctuations in the price of pork did Granger cause CPI, the impact of pork price fluctuations on the CPI was significant and the effect significantly was enhanced after certain lag; CPI did not Granger cause pork price fluctuations, CPI had no significant effect on the price of pork; pork price was affected by its own large contribution, and there was a certain time lag effect of the impact; CPI had a positive impact on itself, for its contribution is relatively large. Finally we put forward relative strategies.