Thinning liquid and glass substrate thinning method

The invention relates to the technical field of glass substrate manufacturing, and especially relates to a thinning liquid and a glass substrate thinning method. The thinning liquid for etching glass substrates comprises, by mass, 10-30% of HF, 2-10% of NaCl, 6-25% of NH4HF2, 6-17% of a strong acid, and the balance of water. The thinning liquid is prepared through comprehensively considering the utilization values of different substance reaction resultants, and is used to carry out metal substrate thinning work, and has the advantages of simple production technology, high production yield, high efficiency, meeting of large batch production needs, and further reduction of the thinning thickness of the glass substrates of touch products.