The problems existed in mathematics teaching are analyzed from the perspective of teaching pathology，including teaching balance，authoritarian teaching，teaching bias and teaching barrier. Accordingly，three suggestions are posed. Firstly，the degree of difficulty should be adjusted，permeability of professionals should be increased and mathematical culture should be added. Secondly，teaching evaluation system should be integrated and teaching evaluation methods should be diversified. Finally，empathy should be paid great attention to and teacher-student communication should be increased.