Abstract: In view of the mechanism of flokkit and pilling, this paper reviewed the advances of characterization technology by combination with the available testing methods and characterization science. The frequently-used fabric pilling testers, such as Martindale abrasion tester, ICI pilling box and the random tumble pilling tester, image processing and prediction by the artificial neural network were introduced and . The researches of previous researchers about the mechanism and characterization of flokkit and pilling and its effect on the characterization technology were briefly reviewed, to illustrate the importance of the mechanism of flokkit and pilling, and to prompt that the research on the aspect will contribute to the classic problem of the characterization of flokkit and pilling solving and breakout. The problem of flokkit and pilling mechanism was also analyzed and thus the disadvantages of the sorts of characterization technologies as result of the insufficient researches on flokkit and pilling mechanism were proposed. It will help to characterize the mechanism of flokkit and pilling in nature.

Key words: fuzzing , and pilling, characterization technology, objective characterization, virtual characterization