A corrosion-proof German silver band for plate heat exchanger and its production are both disclosed herewith. It contains (wt%): Ni 9.0-11.0, Mn 0.5-1.0, Fe 1.0-1.8, Ce 0.05-0.2, and waste Cu alloy with Cu balanced, and with impurity not more than 0.7. It is produced by: weighing, smelting, casting, hot rolling, end-surface milling, primary rolling, inter-annealing, cold rolling, inter-annealing,edge cutting, pre-rolling, inter-rolling, fine rolling, final annealing, surface treating, cutting, and packing. It is of size (0.4-8.5mm)X(300-1000mm)X(500-3000mm), performance of Rm not less than 320MPa, A11.3 not less than 30%, Hv1 not less than 85, grain 0.015-0.045mm, and Ra larger than 0.2um without scratches, and can meet demands of PHE and bactericidal washing machine.