This research aims to study 1) ability to write the spelling language Thailand of students Grade 4-6 school at Ban Mae Ka district, phayao 2) summarizes the problem spelling language Thailand of student writing, grade 4-6 schools ban Mae Ka district, phayao. Samples used in research. All population groups, for example, include students, elementary 4-6 school district, phayao, Mae Ka studying in semester 2, academic year a total of 45 people 2558.