NOVELTY - A glyphosate mother solution is treated by (A) resin absorbing process, (B) resin desorption process, and (C) formaldehyde recovering process. The step (A) includes absorbing glyphosate with 10-15 times resin filling by absorbing column filled with resin; and keeping balance of mother solution in absorbing process, where discharging and absorbing time of single batch is 2-8 hour. The step (C) includes recovering formaldehyde water solution from discharging water in step (A) by evaporation in positive pressure, and obtaining 37% formaldehyde water solution.    USE - Method for treatment of glyphosate mother solution (claimed).    ADVANTAGE - The method is capable of recovering and recycling waste material, achieving circular economy, saving energy, reducing consumption and production cost. It also environment friendly.    DETAILED DESCRIPTION - Glyphosate mother solution is treated by (A) resin absorbing process, (B) resin desorption process, and (C) formaldehyde recovering process. The step (A) includes absorbing glyphosate with 10-15 times resin filling by absorbing column filled with resin; and keeping balance of mother solution in absorbing process, where discharging and absorbing time of single batch is 2-8 hour. The absorbing process is normal pressure operation. The resin is anion exchange resin with weak alkalinity. The step (B) includes removing residual glyphosate mother solution from saturated resin absorbing column in step (A) by blowing, and soaking in alkali solution for 30 minutes, and collecting desorption solution, where concentration of glyphosate contained in the desorption solution is greater than 6%. The step (C) includes recovering formaldehyde water solution from discharging water in step (A) by evaporation in positive pressure, and obtaining 37% formaldehyde water solution. The content of formaldehyde in wastewater of distilling tower kettle is smaller than 0.1%. The glyphosate mother solution is from process for preparing glyphosate by iminodiacetic (IDA) acid path air oxidization method, namely process of generating glyphosate by oxidization of N-(Phosphonomethyl)iminodiacetic acid (PMIDA) under catalyst function, where content of glyphosate is 0.5-1.5% and content of formaldehyde is 1.5-7%.