xamples

    -------------------------------------------------------------------------------------------------------------
    . webuse klein
    . reg3 (consump wagepriv wagegovt) (wagepriv consump govt capital1)
    -------------------------------------------------------------------------------------------------------------
    . webuse supDem
    . global demand "(qDemand: quantity price pcompete income)"
    . global supply "(qSupply: quantity price praw)"
    . reg3
supply, endog(price)
    -------------------------------------------------------------------------------------------------------------
    . webuse klein
    . global conseqn "(consump profits profits1 wagetot)"
    . global inveqn "(invest profits profits1 capital1)"
    . global wageqn "(wagepriv totinc totinc1 year)"
    . global enlist "wagetot profits totinc"
    . global exlist "taxnetx wagegovt govt"
    . reg3
inveqn
enlist) exog(
conseqn
wageqn, endog(
exlist) constr(1) ireg3

命令好像是3SLS，可以查看一下手册帮助文档

感谢！

谢谢喔，我先去试试看