  The regular solar observations are operated at Huairou Solar Observing
Station (HSOS) since 1987, which make the construction of long-term magnetic
field datasets available to understand solar magnetic field and cycles. There
exist some inconveniences for solar physicist to use these data, because the
data storage medium and format at HSOS experienced some changes. Additionally,
the processes of magnetic field calibration are not easy to deal with for who
are not familiar with these data. Here shows that the magnetic field of HSOS
are further processed toward international standards, in order to explore HSOS
observations data for scientific research.
