Abstract:Geothermal field in eastern Liaocheng city of Shandong province located in the northern region of Yanggu uplift. Geothermal fluid in Ordovician Majiagou hot geothermal reservoir is mainly composed of geothermal water. Its salinity and temperature are high with larger amount of water. It belongs to chloride sulphate[CD*2]sodium and calcium salt and medium extremely hard type water. Its concentration of strontium and fluoride reached a named mineral water; the content of borate reached a concentration of medical value, sometimes can reach the concentration of mineral water; silicic acid content reached a concentration of mineral water, which has strong corrosion to metals, has a crystalline erosion to general cement, non[CD*2]degradable erosion to all kinds of cements, and contains many trace elements which are beneficial to humans, such as iron, lithium and manganese. It can be used in geothermal heating, bathing, medical care, farming, aquaculture, industry and other industries.