The invention relates to a germanium-containing Zr-Sn-Nb alloy capable of being used as structural materials such as fuel cladding of a light water reactor nuclear power station, stripes of a location grid and the like, belonging to the technical field of zirconium alloy materials. The zirconium alloy comprises the following chemical components in percentage by weight: 0.3-1.5% of Sn, 0.1-1.2% of Nb, 0.03-0.4% of Fe, 0.02-0.3% of Cr, 0.01-0.8% of Ge and the balance of Zr, preferably 0.5-1.0% of Sn, 0.2-1.0% of Nb, 0.01-0.35% of Fe, 0.03-0.2% of Cr and 0.05-0.5% of Ge. The zirconium alloy can show excellent corrosion-resistant property in 360 DEG C/18.6MPa/0.01M LiOH aqueous solution, which is obviously better than Zr-4 alloy, is good in processability, and can be used as reactor core structural materials such as fuel element cladding of a pressurized water reactor of the nuclear power station, stripes of the location grid and the like.