Groundwater corrosion data in Handan area obtained from sampling and chemical analysis were analyzed by using the GIS software.The forms,and grades of groundwater corrosion were evaluated by the single-factor judgment according to the Code for Investigation of Geotechnical Engineering(GB50021-2001),and the distribution of the corrosion factors were studied.The results show that the groundwater has medium corrosion to concrete structure: the medium,weak crystal corrosion and weak decomposition corrosion to the concrete;and the medium,weak corrosion to the concrete reinforcing bars.The major corrosion factors including SO₄^2-、Mg²⁺、Cl-,are mainly distributed in the vicinity of some major chemical enterprises.