The invention relates to a compound tube with internal lining made of corrosion resistant metal, which has end parts and a liner tube made of corrosion resistant metal and an outer body tube made of carbon steel or low alloy steel. The corrosion resistant metal applied in the end parts and the liner tube is used for resisting medium corrosion, while the carbon steel or the low alloy steel applied in the body tube is used for ensuring mechanical strength. When two compound tubes are welded together, a continuous tube made of corrosion resistant metal is formed in the compound tube, thereby ensuring that the whole tube has the corrosion resistance property of the corrosion resistant metal. When the mechanical strength at the joint of the two compound tubes is relatively low, the mechanical strength can be reinforced by (1) improving the wall thickness of the tube joint, (2) applying fiber reinforced composite, or (3) applying clamper filling technology. The liner tube of the invention can be made of corrosion resistant metals like stainless steel, nickel-based alloy, high content nichrome, titanium alloy, etc. The compound tube provided by the invention has good corrosion resistance, easy processing and low cost.