Container lid

The utility model discloses a container cap which comprises upper and lower bodies of mutual fit and wherein the lower body supports a sealed subcontainer which can deform and contains the content and the upper body covers the sealed subcontainer the bottom of which is sealed with a film. The utility model can act as the container cap used at the industrial fields of foodstuff, health care product, drug, chemical product and daily chemical product, etc. Any instant matter can use the container equipped with the utility model for reservation. The utility model has the advantages of reliable content seal, no moisture invasion and oxygenization, simple manufacture, lower cost and convenient content release and labor saving.