An oilfield in Bohai Sea has entered the late stage of exploitation, the seabed exploitation temperature has increased year by year, and the problem of pipeline scaling has become increasingly serious. Scale formation will cause blockage, so that the injection well can not reach the distribution of injection volume, oil well output greatly reduced, serious may cause the abandonment of water injection Wells, oil Wells, greatly increase the safety hazards and pollution of the ecological environment. At present, the supply cycle of the anti-scale agent in use is long, the concentration is too large, the physical properties are not able to withstand high temperature, and sometimes the anti-scale agent is not pure enough, contains flocculants, and there will be stratification after a long storage time. This has affected the normal production of oil fields and increased the cost of oil recovery at the economic level. At present, calcium-magnesium scale and barium-strontium scale are easy to form scale in offshore oil fields. Aiming at this problem, three new anti-scale and corrosion agents are screened in this paper, and the compatibility between different agents is studied to ensure the efficient production increase of oil fields.