Improved damp-proof closuring plaster

Disclosed is an improved moisture-proof sealing paster adhibited at the lip of a container jar or at the lip on the cover body of a container to keep off moisture. The utility model primarily comprises a paster body lying between the lip of the container and the cover body; the paster body matches with an upper positioning substrate of the inner diametral section of the cover body and is applied in axial positioning of the inner diameter of the cover body; the bottom of the upper positioning substrate corresponding to the inner diametral section of lip of the container is pasted with a lower positioning substrate which is used in the axial positioning of the lip of the container and which forms a round self-adhibiting substrate surrounding the outer circumference of the lower positioning substrate. The utility model is simple in structure and is easy to make. With the utility model, the lip pf the container can be quickly sealed without a capper to keep off moisture.