The invention discloses a short-process production method for high-strength and high-conductivity copper alloy strips, and belongs to the technical field of metal materials. In order to solve the problem that large hot rolling equipment is needed when a traditional 'semi-continuous ingot casting-hot rolling-face milling-cold rolling-solid dissolving-cold rolling-aging' process is adopted for producing high-strength and high-conductivity copper alloy strips, meanwhile, the yield is low, energy consumption is large and the cost is high, hot-cold combined casting type horizontal continues castingis adopted for preparing copper alloy plate blanks, then the cold-rolling-solid dissolving-cold rolling-aging process is carried out, the high-strength and high-conductivity copper alloy strips are produced, blank reheating, hot rolling and face milling treatment can be omitted, and the method has the advantages that equipment investment is low, the technological process is short, the yield is high, energy consumption is low, and the production cost is low. The horizontal continuous casting plate blanks are 200-800 mm wide and 5-50 mm thick, the rolling pass deformation is 20-50%, the rollingspeed is 60-600 m/min, and the processed product is 200-800 mm wide and 0.05-2 mm thick.