In view of the current problems of unfriendly environment of conventional acid solution and the need for timely backflow after acidification，based on the investigation of corrosion performance of lactate and gluconic acid，chelation capacity of glutamic acid N，N-diacetate GLDA，and the optimization of of additives，the formulation of green acid dissolving solution system was determined as follows，20% lactate + gluconic acid（molar ratio 1∶1）+ 1.5% GLDA + 2% inhibitor HLS-1 + 1% iron ion stabilizer CA-1 + 2% clay stabilizer COP-2. The corrosion performance，corrosion inhibition，degradability and damage to reservoir of the system were investigated. The results showed that the system had good corrosion inhibition，inhibition rate and chelation performance，and the system had low damage rate to core，no secondary precipitation，no acid residue，stable residual acid. The corrosion reaction rate constant of the system was 3.37×10-7（mol/L）-m/（cm2·s），which was 0.1 times of that of the conventional thickened hydrochloric acid. The reaction product was calcium lactate gluconate with high solubility in the process of acidification. Infrared spectrum analysis further proved the degradability of the acid solution. The acid solution had the characteristics of nonflowback acidification，which is helpful to reduce the cost of acidification construction and realize green environmental operation