The invention relates to a method for synthesizing suspension deformation polyacrylamide, which comprises 20-30% of acrylamide, 2-8% of 3,5-diacryloyloxyethyl-benzenesulfonic acid, and the rest is desalted water, the total amount is 100%. , adding 5-10ppm of catalyst potassium persulfate and 5-10ppm of sodium bisulfite, the initial reaction temperature is 0-15°C, and polymerized. It has good salt resistance and is not limited by the salinity of prepared water and formation water. Particle strength, particle size, expansion multiple, and expansion speed can be controlled through ground production according to site conditions. It has certain solubility and viscosity in aqueous solution, so that colloidal particles can be evenly suspended in the solution, and the volume of the oil does not change, and the water-absorbing body expands. It becomes soft and can be deformed under the action of external force, and the deformation is reversible. The surface is cross-linked and combined, which avoids the problem of underground non-gelling, and can change the pressure field and streamline field formed by long-term water flooding in the deep formation, achieving the effect of regulating and flooding. .