Abstract: In view of the low efficiency caused by the lack of fast review software for the countersigning of urban rail transit line drawings, this paper proposed to develop a support system for the countersigning of urban rail transit line drawings, studied the automatic generation method of countersigning special drawings and countersigning special tables, the automatic review method of station interval interface table and interconnection channel table, developed a line drawing countersigning support system, and tried to verify it in the countersigning process of a urban rail transit line drawing. The verification results show that the fast review support function provided by the system can significantly improve the review efficiency and drawing quality.