回复：（前辈帮忙看看）博士后拿了绿卡以后还能继续claim tax treaty ?

No. You have to pay the income tax as any other green card holder and US citizen do. The US-China Tax Retreat is only for the non-resident alien form China. If you use this benefit, your green card will be automatcially invalid. You also can not use Resident-Alien tax benefits, if any, any more