首先根据立体几何、平面几何和直角三角形的有关定理，推导出了混合式球罐上下极带球瓣32个尺寸的通用计算公式，其中的推导方法较球面三角形法简单；其次介绍了用VisualBasic语言进行Windows程序设计时，输入输出界面及结果打印的设计思路；最后结合球罐设计的实际经验，阐述了混合式球罐上下极带球瓣尺寸设计的基本原则，以及制造厂如何利用本文介绍的通用计算公式，对球瓣做近似展开，并制订一次、二次下料方案。 First of all, according to the related theorems of solid geometry, plane geometry and right triangle, the general formula of 32 dimensions of the upper and lower polar valleys of hybrid spherical tank is deduced. The derivation method is simpler than the spherical triangulation method. Secondly, In the end, the basic principle of the design of the size of the upper and lower ball valves of the hybrid spherical tank is expounded with the practical experience of the design of the spherical tank. Finally, General formula, the ball valve to do an approximate expansion, and to develop a once, twice the feeding program.