Objective：To understand the situation of mandibular movement disorders in children with different types of cerebral palsy(CP).
Methods：Choose 4-3 cases of different types of cerebral palsy who had been in the Cerebral Palsy Prevention and Treatment Center of Heilongjiang Province from June 2014 to June 2015 as the observation group, including 18 cases of mixed type and dyskinetic type, 25 cases of spastic type. At the same time, 40 normal children in a kindergarten in Jiamusi were selected as the control group. Mandibular Movement Function Evaluation Questionnaire was used to observe, evaluate and record the mandibular movement ability of the children.

Results：The scores of the observation group and the control group had statistically significant difference(P<0.05,0.01). Compared with the control group, the mandibular movement test scores of the mixed and dyskinetic type group had statistically significant difference(P<0.05,0.01). Compared with the control group, except that mandibular protrusion movement and the left and right movement test scores had no statistically significant difference(P>0.05), other differences in the mandibular movement test scores were statistically significant(P<0.01) in the spastic group. Compared with spastic group, except that mandibular anterior extension evaluating score was not statistically significant(P>0.05), other differences in the mandibular movement test scores were statistically significant(P<0.01) in the mixed and dyskinetic group, and the scores of the spastic group were higher than the mixed and dyskinetic group.
Conclusion：Mandibular movement disorder is a kind of articulation organ movement disorder in children with cerebral palsy, and there are significant differences in the form and severity in children with different types of mandibular movement disorders.