The invention discloses a technology of simultaneously treating a copper-smelting furnace bottom high-iron-content alloy material and waste technical hydrochloric acid and comprehensively recovering iron, copper and other noble metals. The waste technical hydrochloric acid produced in the organic chemical industry is taken as a leaching agent for carrying out direct leaching on the copper-smelting furnace bottom high-iron-content alloy material, and an iron-bearing leached liquor and leached residues rich in aurum and silver are obtained; then the iron-bearing leached liquor is subjected to pulse ultrasonic coupling iron scraps reduction purification, valuable elements dissolved in the leached liquor enter replacement residues through ultrasonic coupling reinforced replacement, particularly arsenic enters the replacement residues in a copper-arsenic alloy phase stable state, and AsH3 gas is avoided and a FeCl3 purifying agent product corresponding with the national standard is obtained. The technology generates no waste water or waste residue throughout, full-dose utilization of the copper-smelting furnace bottom high-iron-content alloy material and the waste technical hydrochloric acid is realized, and a technological process is a closed loop. The technology has the prominent advantages that the raw material adaptability is high, the technological process is simple, a valuable element recovery rate is high, and cleanness and environment protection are facilitated.