Japan is a nation with many mountains. landslides are wide-spread.2997 landslide points have been appointed by the department of construction in Japan. landslides give damages to people's living and traffic a great losses ina year;therefore,it has been paid great attention to the prevention strategies of landslides,a field measuring oflandslide,s state in china has been introduced briefly,the principles of system and the function of system that Hisashi TSUCHIYA and others created a field measuring system for landslides has been introduced in this paper,the in.troduction are just for the researcher's consideration.