【摘要】Based on a new panel data,we find a very significant and robust empirical relation:there is distinct crowding out effect of government debt to private investment.After controlling a few variables emphasized by investment literature,the higher government debt-GDP ratio is,the lower private investment rate is.This kind of negative effect of government debt may come from the fluctuation of government debt-GDP ratio.There are enough attritions in the real world that lapse the Ricardian equivalence proposition.