Working principle and structure characteristics of furan resin A+B curing agent controller were introduced,and processing factors and noted items of the controller applied successfully in acidic hardening furan resin moulding line were described.Relationship of sand temperature with A,B pump and average total acidic rate of curing agent was presented.Curing agent controller from the Shengquan company was assembled on the moulding line.With reclaimed sand addition of 0.65%⁰.85% and A+B curing agent of 30%⁴0%,effects of reclaimed sand temperature on curing velocity during self-hardening sand process were eliminated,ensuring the quality of casting mould and sand core,decreasing the product cost.