Affected by the austerity policy and the drastic change of the school-age population，temporary teachers have become an important part of the teaching staff of public primary and secondary schools in megacities. Temporary employment of teachers can alleviate the shortage of teachers，but it is easy to cause contract disputes and withdrawal problems. If large-scale promotion，local finance is difficult to support. Therefore，the management of temporary teachers should be strengthened and the quality of temporary teachers should be improved as a whole. Establish a salary protection mechanism for temporary teachers；Invigorate the enterprise establishment stock，establish the provincial level overall plan，the teacher establishment management mechanism of special organization；To establish a dynamic verification mechanism of teacher staffing based on the school-age population with residence permit to fundamentally solve the contradiction between supply and demand of primary and secondary school teachers.