As an important part of vocational education, private secondary vocational education has some problems dying for solution, with a sub-healthy status on the whole. The sub-health of private secondary vocational education is caused by such factors as utilitarianism ideas, low quality of professional teachers and student resources, lack of advanced educational concepts, backwardness of course construction and limitations of teaching assessment, etc. Therefore, as for the sub-health of private secondary vocational education, we need to find the exact and effective "medicine", and hold on the "four must" to promote the healthy development of private secondary vocational education.