Many studies have been conducted on the household expenditure pattern in Bangladesh. But only a very few of those have considered the household expenditure pattern of Santals in Bangladesh. In this study the information of income and expenditure on different item are collected by direct interview. Here an effort is made to introduce some models, which can provide the significance of relationship between the income and expenditure on different item like food and nonfood. The main objectives of the study are [1] To examine the social and anthropological aspect of Santal tribe [2] To over view the social structure and tradition of Santal tribe [3] To obtain information related to household expenditure and consumption patterns [4] To estimate the expenditure elasticity with respect to income for consumer items based on six alternative forms of equation by E. Engel.