In this paper, using beef monthly wholesale prices of the past 45 years up to 2014, I analyzed the fixed cyclical fluctuation and the variable cyclical fluctuation as a function of time. The results of the fixed cyclical fluctuation analysis are: the dressed carcass wholesale prices in each of adult cattle beef, Japanese bullock beef, Japanese cows beef, dairy cows beef, dairy fattened bull beef have reflected fundamental periods of 172 months, 174 months, 170 months, 256 months, 258 months respectively. In the analysis of the variable cyclical fluctuation as a function of time, the periods of cyclical fluctuation of dressed carcasses wholesale prices are increasing in length in Japanese bullock beef and Japanese cows beef. But this period is decreasing in length in adult cattle beef. Due to the limitations of the data length, dairy fattened bull beef and dairy cows beef cannot be analyzed in terms of variable periods of cyclical fluctuations in each of dressed carcasses wholesale prices. The cyclical fluctuation in beef prices, the amplitude gradually decreased as the scale of domestic production farmers expanded until the end of the 1980s. The increase of imported beef from the beef import liberalization in 1991 has had an impact on cyclical fluctuation of domestic beef prices. Now, the cyclical fluctuation of domestic beef prices is not linked with the domestic production cycle of beef.
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