Tap water offset printing water quality stabilizer as well as preparation method and use method thereof

The invention belongs to the technical field of lithographic printing, and particularly relates to a tap water offset printing water quality stabilizer and a preparation method and a use method thereof.The tap water offset printing water quality stabilizer comprises, by mass, 5-17% of a buffer system, 1-10% of a microorganism bacterium solution, 1-5% of a printing plate protective agent, 5-20% of a microorganism maintaining system, 3-30% of a plate cleaning reinforcing agent and the balance water. 0.5-5% of a defoaming agent and the balance of water. The prepared tap water offset printing water quality stabilizer solves the problems that fountain water is difficult to standardize due to different standards such as hardness, acidity and alkalinity, water quality and total solid content of tap water in different places, and waste water is increased and printing quality is reduced due to the fact that paper dust, paper lint and grease are gradually accumulated in the fountain water in the printing production pro