The protection countermeasures for the ecological environment of highway construction project in mountain area are investigated in order to minimize the disadvantageous effects of highways construction on the ecological environment along the line.By taking the Ankang-Hanzhong highway construction project for an example

the effects of each function section in highway construction

such as main work

bridge project

tunnel project

service project

and temporary floor area

on the ecological environment along the line are analyzed

and then the environmental protection countermeasures for the different construction stages

such as designing period

construction period

and operating period

are studied.The environmental protection countermeasures

which are reasonable and feasible in practice

are proposed.A better environmental protection measure system of highways construction project is established.