A type of overgroups of certain subgroups of orthogonal groups are determined over local rings,with the result as follows: Let R be a local ring,M the unique maximal ideal of R,O(2m,R) an orthogonal group over R.

• 定出了局部环上正交群中一类子群的扩群；得到了如下结果:设R是局部环；M是R的唯一极大理想；O(2m；R)为R上正交群.