The paper aims to adapt to the new request of labor protection and environmental protection under the new national situation, reduce the harm of dust on cement packing to worker’s health, lower the morbidity of occupational diseases and achieve automatic packing of cement. An automatic bag-insert system for cement was developed and used actually for demonstration. After one year of test run, the success rate of bag-insert was 99% and the work efficiency was 100 t/h. It is concluded that it changes the traditional manual cement-bag inserting situation, achieves automatic bag-insert of cement packing, degreases the labor intensify, improves the work environment. The automatic bag-insert machine has good effect and is expected to replace manual cement-bag inserting.