Broad-spectrum and efficient cleaning agent for cooling system

The invention discloses a broad-spectrum and efficient cleaning agent for a cooling system, comprising the following components in percentage by weight: 1-5% of organic acid, 0.5-3% of metallic ion chelating agent, 0.5-2% of cleansing promotion agent, 0.1-1% of corrosion and scale inhibition dispersing agent, 0.3-5% of degreasing agent and the balance of water. The cleaning agent of the invention has safe use, the cleaning time is 1-2h, and the descaling rate is more than 90%, thereby greatly reducing corrosion and damage on the cooling system.