Fiber quality of 108 cotton varieties with Fusarium and Verticillium wilt resistance in China was analyzed. Most of the varieties had 2.5% span fiber length above 29mm, whereas a few was with less than 27mm of 2.5% span fiber length. The mean of fiber strength was low, but there were several varieties possessing high fiber strength. The fiber micronaire readings was with high average. From the 1960s to the 1990s, the fiber quality of these varieties showed unobvious progress of genetic improvement. There was no obvious increase in averages of length, strength and micronaire, but the range of fiber length was widen and the upper limit value of length and strength went up gradually. Some varieties with finer fiber appeared in the 1990s. Varieties with good fiber quality were screened out, among them, 10 varieties with 2.5% span fiber length above 33mm, 10 with fiber strength over 33. 2cN/tex, 10 with fiber uniformity over 87.1 % , 10 with 3.8 - 4.3 micronaire readings, and 9 varieties possessed good comprehensive fiber quality.