DATA: g_firstdate LIKE sy-datum, "当月第一天 g_lastdate LIKE sy-datum. "当月最后一天 IF <it_list>-afabg >= g_lastdate. "折旧计算开始日期 >="当月最后一天 CALL FUNCTION ‘HR_IT_TFR_MONTHS_BETWEEN_DATES’ EXPORTING begda = g_lastdate endda = <it_list>-afabg IMPORTING months = l_x. ELSE. CALL FUNCTION ‘HR_IT_TFR_MONTHS_BETWEEN_DATES’ EXPORTING begda = <it_list>-afabg endda = g_lastdate IMPORTING months = l_x. ENDIF.