The development of modern geodesy and the history of geodetic work in china are reviewed. The future tasks,both in theoretical research and practical work,for Chinese geodesists in 90' s are proposed and discussed: The relevelling of second term nationwide 1st order levelling network;to set up nationwide GPS network;The improvement of the resolution and accuracy of gravity field;The establishment of a GPS satellite tracking network;The measurement for the relative vertical displacement of land versus sea surface in the coast zone;The monitoring for the crust deformation Qing-zang plateau.