Abstract: Sixty rapid events observed with Corona-Radiospectrometer at Yunnan Observatory during solar cycle 22 are analysed in this paper.Five types of rapidly varying component are observed.They are spike emission,enhanced noise,rapid fluc tuation,spike-like and superimposed impulse.Some characteristic parameters of these events such as brightness temperature,superimposed character,characteristic time,emission source size,polarization are investigated and radiation mechanism,the characteristic parameters of radio burst,slowly varying components and quiet sun are studied as well.Based on the study,certain features of basic components are confirmed.