通过对公路钢筋混凝土受弯构件常用的单筋矩形截面和单筋Ｔ形截面满足正截面强度和裂缝宽度要求的配筋计算问题进行分析比较，提出了由哪种要求控制配筋设计的判别式，并编制了有关计算数表，避免了重算麻烦，简化了计算程序。 Through the analysis and comparison of the reinforcement calculation problems that the single reinforced rectangular section and the single reinforced T shaped section of the flexural members of highway reinforced concrete meet the requirement of the normal section strength and the crack width, the discriminant formula which is required to control the reinforcement design , And the preparation of the calculation of the number of tables to avoid the recalculation of the trouble and simplify the calculation process.