  Based on the Chinese historical sunspots drawings, a data set consisting of
the scanned images and all their digitized parameters from 1925 to 2015 have
been constructed. In this paper, we briefly describe the developmental history
of sunspots drawings in China. This paper describes the preliminary processing
processes that strat from the initial data (inputing to the scanning equipment)
to the parameters extraction, and finally summarizes the general features of
this dataset. It is the first systematic project in Chinese solar-physics
community that the historical observation of sunspots drawings were digitized.
Our data set fills in an almost ninety years historical gap, which span 60
degrees from east to west and 50 degrees from north to south and have no
continuous and detailed digital sunspot observation information. As a
complementary to other sunspots observation in the world, our dataset provided
abundant information to the long term solar cycles solar activity research.
