The objective of this research is to study Valentine Present Buying Behavior undergraduate students Faculty of Home Economics Technology Rajamangala University of Technology Phranakhon. The purpose of this research were firstly to Valentine Present Buying Behavior of the bachelors’ Faculty of Home Economics Technology of Rajamangala University of Technology Phranakhon and secondly to study the relationship of between personal background and Valentine Present Buying Behavior of undergraduate students Home Economics Technology Rajamangala University of Technology Phranakhon. This research was divided into marketing factor and survey research. The sampling were 305 undergraduate students faculty of Home Economics Technology of Rajamangala University of Technology Phranakhon. The research tool was questionnaires and by analyzing statistical packages from social science programs and by using percentage and means. The result were found that Most undergraduate students faculty of Home Economics Technology Rajamangala University of Technology Phranakhon had bought Valentine presents from shops. They were bought for boy friends or girl friends price was 100 – 500 Bahts. The buying reason was depended on present styles. Flowers were the first buying Valentine present the planning in Valentine present buying was saving the most buying place was department stores. Friends accompanied them Valentines presents. Buyer decided by themselves on Valentine’s Day buyers bought Valentin presents about 1 - 5 pieces. Those who had never bouht Valentine Day’s present gave the reason of extravagance.