Electronic circuit board detergent

The invention discloses an electronic circuit board detergent comprising the following components in percentage by weight: 40-70% of straight-chain paraffin, 20-50% of monohydric alcohol, 1-6% of ethers, 0-3% of esters and 0.1-1% of active agent. The electronic circuit board detergent is colorless and transparent without mechanical impurities, cannot bring secondary pollution to products, is light in smell, and meets instruction specifications of European Union RoHS (Restriction of Hazardous Substances); after being cleaned by using the detergent, the surface of a plate is clean and beautiful without blanching residues; the detergent can be used for operation at room temperature, and has no special requirement on the temperature of a cleaning task; and after cleaning, the detergent is easy to volatilize and dry naturally without heating.