The invention discloses a concrete member water-washed chiseling process. The process comprises following steps of S1, bottom body treatment; S2, isolation agent painting; S3, mold plate cleaning andchecking; S4, exposed aggregate agent stirring; S5, exposed aggregate agent spraying on the mold plate surface; S6, mold plate supporting; S7, concrete casting; S8, mold plate dismounting; S9, concrete surface checking; S10, high-pressure water gun flushing; S11, flushing result acceptance inspection; and S12, maintenance. The high-pressure water-washed chiseling process is used, concrete laitanceon the side face of a beam plate can be effectively flushed away, aggregate is evenly exposed, bonding firmness of new and old concrete can be effectively ensured, compared with traditional chiseling, water-washed chiseling cannot destroy part corners, finished product protection is facilitated, construction quality is improved, the process is easy to operate, the labor intensity is low, manual work and time can be saved, construction efficiency is greatly improved, cost is saved, in the construction process, noise and dust cannot be generated, and the process is environment-friendly.