A corrosion resistant low noise semi-metallic brake pad comprises the following components according to weight percentages: 2-4% of nitrile rubber buna, 3-5% of tyre powder, 3-5% of expandable graphite, 9-13% of phenolic resin, 10-15% of stainless steel chopped fibre, 4-7% of red copper fibre, 2-3% of cashew nut oil friction powder, 3-5% of graphite particle, 7-10% of superfine ferric oxide powder, 3-5% of diatomite, 7-12% of acicular wollastonite fibre, 10-15% of barite, 3-5% of chromite, 4-8% of sepiolite fibre, 0.2-0.5% of zinc stearate, 2-3% of zirconite, 3-5% of boron nitride and 2-3% of supramoly; the brake pad has the characteristics of corrosion resistant performance, high frictional coefficient, satisfactory high temperature and thermal decay resistant performance, long service life, and the like. After the brake pad is used, the car brake is sensitive, the braking is stable and brake noise is low, and the brake drum or brake disc has no damage in long-term use.