1、下载ssc install outreg2  // 不行就用findit
2、单一结果导出
oaxaca lnw eduyrs wexp , by(sec_2)  robust
outreg2 using "路径\OB结果.xls", excel replace  // xlsx会报错
3、多结果导出
reg y x1 if age == 2 | age == 3, robust
outreg2 using "路径\二产结果.xls", replace excel ctitle("Age 2 & 3")
reg y x1 if age == 4, robust
outreg2 using "路径\二产结果.xls", excel ctitle("Age 4") append
reg y x1  if age == 5 | age == 6 | age == 7, robust
outreg2 using "路径\二产结果.xls", excel ctitle("Age 5, 6 & 7") append // 使用append