The survey research was to analyse influencing factor for latrine construction in Sukhothai Province through comparison of influencing factors among the high moderate and low construction percentage groups. Each group contained 20 households making total study population of 600 households Questionnaire was constructed and interview was made for data collection. The statistics used was multiple classification analysis (MCA). Eighteen variables was suspected to influencing factors for latrine construction. The study showed that: 1. The high construction percentage group: 1.1 Personal characteristic factors-the most important factor was information received while the other influencing factors were : highest education level of member of household occupation

and attitude toward latrine construction respectively. 1.2 Social and economic factors-the most important fact was purchasing power for needed material while the other influencing factors were : type of housing

social status

member of household average income

sanitation group membership

and social support respectively. 1.3 Environment and natural resource factors-the most important factor was distance between house and source of water. The other influencing factors were: availability of natural material needed for latrine construction : duration of water availability

land form of housing location

and housing surrounding area respectively. 2. The moderate construction percentage group: 2.1 Personal characteristic factors-the most important factor was information received. The other influencing factors were : highest education level of member of household

occupation

attitude toward latrine construction

age of household head

and highest educational level of household head respectively. 2.2 Social and economic factors-the most important factor was purchasing power for needed material. The other influencing factors were: social status

type of housing

member of household average income

sanitation group membership and social support respectively. 2.3 Environment and natural resource factors-the most important factor was distance between house and source of water. The other influencing factors were: availability of material needed for construction

land form of housing location

duration of water availability

and type of housing surrounding area respectively. 3. The low construction percentage group: 3.1 Personal characteristic factors-the most important factors was information received while the other influencing factors were:age of household head

occupation

highest education level of household head

Attitude toward latrine construction and highest education level of member of household respectively. 3.2 Social and economic factors-the most important factor was purchasing power for needed material. The other influencing factors were: members of household average income

social support

sanitation group membership: type of house . and social status respectively. 3.3 Environment and natural resource factors-the most important factor was land form of housing location. The other influencing factors were: type of housing surounding area

availability of natural material needed for construction

distance between house and source of water

and duration of water availability respectively. In conclussion, it is recommended that in order to increase the latrine construction coverage in Sukhothai Province, implementation methodology should be closely rerated to the existing problem in each community. Particulary , the low latrine construction percentage group identified land form of housing location as the most important obstruction factor for latrine construction. The plans for this problem solving should, then be the development suitable of latrine type for each area such as flood area and elevated hill area. However the increase in latrine construction coverage only was not the sole answer to community diarrhoeal. The health workers should teach community in proper toilet using, food sanitation, personal hygiene, ways and means to get access to safe drinking water and other neccessary health education to support the effectiveness of diarrhoeal disease prevention.