The present invention discloses a powerful metal equipment cleaning liquid, which is prepared from the following raw materials by weight: 4.3-5.6 parts of sodium phosphate, 2.8-4.5 parts of butane, 5.6-7.8 parts of trisodium phosphate, 3.5-5.4 parts of butanol, 5.5-7.5 parts of triethanolamine oleate, 2.4-5.5 parts of a stabilizer, and 3.3-6.5 parts of ethylenediamine tetramethylenephosphonic acid. The powerful metal equipment cleaning liquid has the following characteristics that: the powerful metal equipment cleaning liquid has powerful penetration ability, does not have characteristics of easy combustion and easy explosion during use, has high safety factor, can not cause great adverse effects to the work environment, and does not contain nitrite, phenol, formaldehyde and other substances harmful to the environment; oil stains can be rapidly separated from the surface of work-pieces with heating, scrubbing and other manners during cleaning when the powerful metal equipment cleaning liquid is used; the powerful metal equipment cleaning liquid has characteristics of no toxicity and harm on operators, safety, environmental protection, easy waste liquid treatment, low cleaning cost, high economic benefits, effectively improved processing environment and plant health status, and easily-improved work efficiency; and the cleaning agent provides a long term antirust effect for the cleaned mechanical equipment.