Abstract:This research,s object is based on the actual amount of pollution emission, false amount of pollution emission and the expected net income, combined with the different environment regulation policy. When the enterprise faces the environment negatively or positively, the effect of the incentive or punished environment policies on reducing pollution emission and the green technology innovation. Study found:(1)when the enterprise faces the environment policy negatively, the actual amount of pollution emission is inversely associated with the pollution emission rate and subsidies to reduce emissions, and when the pollution emission tax rate is equal to the marginal subsidies to reduce emissions, it will achieve the optimal drainage balance point, namely the negative environment policy and the positive environment policy have the same effect;(2)when the enterprise participates in the environment policy positively, the incentive of green technology innovation is positively associated with the pollution emission rate and subsidies to reduce emissions, and when the income of emission subsidies is equal to the sum of the difference between the cost increased by innovation, the difference between the cost saved by reduced pollution emission, tax revenue under different policy, it will achieve the optional incentive of green technology innovation balance point, namely the negative environment policy and the positive environment policy have the same effect.