Objective To study the threshold effect of government health expenditure on residents' health.Methods Using threshold panel data model to perform the empirical research.Results There is threshold effect of government health expenditure on residents' health.There are two threshold values.As the increase of the proportion of the government health expenditure to the total fiscal expenditure,it has two changes of the impact on the health of residents.Conclusion The government should increase the health expenditure,and increase the proportion of the government health expenditure to the total fiscal expenditure,but the government should not blindly pursue the high input of health expenditure,focus on the efficiency of health expenditure,and avoid of resource waste.