AMPS homopolymers or copolymers formed with acrylic acid, acrylonitrile, acrylamide, etc. can be used as flocculants, sludge dewatering agents, and scale inhibitors for oilfield wastewater treatment. F. The ternary copolymer composed of AMPS, acrylic acid, and sodium styrene sulfonate launched by Goodrich has a good inhibitory effect on both calcium sulfate scale and calcium phosphate scale, with a scale inhibition rate of over 97%. The literature indicates that using AMPS copolymer as a water treatment agent has the characteristics of low dosage and better effect than existing polyacrylamide water treatment agents.