The Longitude Distribution of Solar Radio Fast Fine Structures

100 radio bursts were recorded from December, 1989 to January, 1994 with the synchronous observational system of solar radio emission with the high temporal resolution at four wavelengths(1.42, 2.13, 2.84 and 4.26 GHz)at the Yunnan Observatory. It is found that 29 events associated with fast fine structures. The Longitude distribution of the radio bursts and fast fine structures is found to bouneven, and there exists some active regions of fast fine structures.