Abstract: A corrosion-resistant antibacterial copper alloy includes components having the following contents: B: 0.0035-0.055 wt. %; P: 0.15-0.35 wt. %; Si: 0.005-0.05 wt. %; an unavoidable impurity element with a content less than 0.1 wt. %; and a balance being copper. In the present disclosure, a copper alloy having both high antibacterial and excellent corrosion resistance may be obtained by using the foregoing alloy composition in combination with an improved preparation process. The copper alloy has broad application prospects in complex working conditions such as medical equipment, marine engineering, heat exchange devices or sanitary equipment.