In order to avoid the repeated designs on the parts of coal shearer and to reduce the development work load of the new product design for the coal shea rer, a study was conducted on the parameterization design method of the parts for the coal shearer.The UG secondary development tolld UG/Open API, UG/Open Menu Script, UG/Open UIStyler and the Microsoft Visual C++ 6.0 programing software were applied to develop the parameterization design system of the parts for the coal sh earer based on the UG.Taking the case of the oil level meter of the ranging arm in the coal shearer cutting unit as an example, the paper in detail introduced the certain process of the system development design. The validity of the method was confirmed with the practical cases. The study showed that the parameterization design syste m could shorten the analysis period of the part design and could reduce the work load of the design and analysis personal. .