Mechanical properties of the calcium-plastic composite have great influence on containers. The main factors influencing the mechanical properties are the process and material formulations. The influence of processing temperature and the kind and dosage of coupling agent was studied. The best processing temperature was determined to be 190 ℃ by means of mechanical properties test of corrugated calcium carbonate-plastic materials processed at different temperatures. The effects of types and dosage of coupling agents on the mechanical properties of corrugated calcium carbonate-plastic materials were studied. The results showed that the type and dosage of coupling agent has great influence on the mechanical properties of the composite, especially tensile and bending strength; the silane coupling agent is the most suitable for calcium carbonate-plastic composite packaging materials; the dosage of coupling agent has great influence on tensile and bending strength; when the mass fraction of coupling agent is 2. 25% , the tensile and bending strength increase by 23. 24% , and the impact strength increases by 3 times approximately.