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Estimating the time scale of species evolution is an important part of life evolution study. It is found that there are significant differences in the evolution rates of different genes and species in recent years, which challenges the molecular clock hypothesis to a great extent. Therefore, new methods are needed to re-estimate the evolutionary event time. The whole genome sequence of angiosperms makes it possible to estimate the evolutionary time from the whole genome perspective. In order to re-estimate the evolution time of angiosperms, an evolution rate correction model based on genomic data is established according to the idea that shared polyploidy events or shared divergence events should have the same Ks peak. The results were as follows:(1)Three common ways to obtain Ks distribution were compared and analyzed, which showed that the best way was to extract the median of Ks values on collinear blocks.(2)The change process of Ks distribution was simulated with time accumulation coefficient(v)of Ks values. When v was assumed to obey the normal distribution, the Ks distribution had a long tail phenomenon.(3)The correction process was described in detail, which was conducive to the understanding and wide spread of this method. From the application of correction method in angiosperms, it was found that the Ks peak before correction was not linear with time, while the Ks peak after correction was directly proportional to time, indicating that it is very necessary to estimate the time of species evolution events after correcting the Ks peak. It was also found that although the evolution rate of angiosperms was significantly different, the evolution rate between different branches was still partially consistent. For example, Magnoliids had the slowest evolutionary rate, followed by Eudicots and Monocots. When the environment changed greatly, most species of different lineages of angiosperms had synchronous radial evolution and adaptive evolution. Finally, a relatively reliable angiosperm evolution time axis was establish, which helps to understand the evolution process and model, especially to understand the phylogenetic relationship and the causes of diversity and provides phylogenetic and evolutionary support for plant research. [ABSTRACT FROM AUTHOR]