The purpose of this study was to identify and analyze the problems faced by teachers in teaching mathematics at Adet town administration secondary schools West Gojjam, Amhara Region, Ethiopia and also to find causes of such problems. The mixed method research design was adopted to conduct this study. Two government secondary schools at Adet town administration were selected for sample by purposive sampling method. Questionnaire, interview schedule and classroom observation were used as tools to collect necessary data. To gather information, questionnaire, interview and class room observation were conducted in schools. The researcher used mean for analysis and interpretation of data collected from questionnaire. The result further authenticated by qualitative data obtained from interview and class room observation. The researcher categorized whole data into problems related to teaching materials, problems related to teaching method, problems related to school administration, problems related to trainers, problems related to training and its transfer in classroom, and problems related to class size, classroom management, teacher’s knowledge, seating arrangement, views of students. The researcher used puorpossive sampling technique.After analysis of the data, the researcher found that mathematics teachers in Adet town administration secondary schools were facing problems due to construction , selection and use of teaching materials,because of lack of ICT lab and internet, trainers ,views of students about learning mathematics and lack of regular supervision . From the above stated findings of this study, it can be concluded that teaching learning activities of mathematics are not satisfactory in Adet town administration. Because the teachers in Adet town administration secondary schools faced a number of problems due to construction and purchase of teaching materials, selection of teaching materials, use of medias, teachers' training and its transfer in real classroom teaching, views of students and finally due to weak school administration