It offers some corrections to the incorrect and inaccurate conclusions in the formefly published works on the analySis of biaxial parallel optic surface tangent plane interference pictures.

• 文中改正了以往文献中对二轴晶平行光轴面切面干涉图形象分析不正确的地方，用数学解析方法求出了二轴晶光率体的圆切面方程、光轴方程；