The purpose of this research is to study financial knowledge. financial attitude and factors affecting spending behavior of Maejo University students in Chiangmai Province In the research, the researcher collected data from Maejo University students in Chiangmai Province 400 people. The research instrument was a questionnaire and analyzed the data using percentage, mean, standard deviation and binary logistic regression analysis. The results found that Most students are female, aged 20 years. Financial knowledge of Maejo University students Chiangmai Province has an average score of 3.84 out of 6 points. For financial attitude of Maejo University students Chiangmai Province has an average value of 3.7173, at the high level. As for spending behavior of Maejo University students Chiangmai Province has an average value of 3. 6406, at the high level, and from the study of factors affecting spending behavior of Maejo University students Chiangmai Province using binary logistic regression analysis, it was found that the financial knowledge and financial attitude factors affecting spending behavior of Maejo University students Chiangmai Province. In terms of financial knowledge, the odds ratio is .400, meaning that students with poor financial knowledge are .400 times less likely to have good financial behavior than students with good financial knowledge. And regarding financial attitudes, the odds ratio was .076, meaning that students with poor financial attitudes were .076 times less likely to have good financial behavior than students with good financial attitudes. And from testing the appropriateness of the model using the Hosmer-Lemeshow Test, it was found that this model was appropriate.