The study results were as follow: Factors affecting the working motivation of Maepuem Municipality Officer, Muang Phayao District, Phayao Province. Motivation factor and treatment factor was rated the average scores at high level. Motivation factor were importance with the succession in working, kind of work, responsibility, accredit and progressing in working. Treatment factor were importance with privacy living, administration, policy, relation in working, position in working, firmness, payment and welfare.