A sterile package, comprising: a plastic container main body with a folding guide line formed therein to be filled with contents sterilely; a protective case integrally molded with the plastic container main body; and a needle unit sterilely stored in the protective case, said needle unit comprising: a needle case which is removed when used; double-ended needle sterilely stored in the needle case and comprising a first end facing the container main body and an second end facing away from the container main body; a connecting portion formed at the first end of the double-ended needle and being heat-sealed with the container main body; a stopper provided in the connecting portion for preventing liquid communication between the double-ended needle and the container main body, the stopper being configured to be punctured by the first end of the double-ended needle when the needle case is pressed toward the container main body; and a check valve provided to an end of the stopper that faces the container main body, the check valve being configured to allow liquid communication, when the stopper is punctured by the double-ended needle, from the container main body to the double-ended needle and to prevent liquid communication from the double-ended needle to the container main body. a plastic container main body with a folding guide line formed therein to be filled with contents sterilely; a protective case integrally molded with the plastic container main body; and a needle unit sterilely stored in the protective case, said needle unit comprising: a needle case which is removed when used; double-ended needle sterilely stored in the needle case and comprising a first end facing the container main body and an second end facing away from the container main body; a connecting portion formed at the first end of the double-ended needle and being heat-sealed with the container main body; a stopper provided in the connecting portion for preventing liquid communication between the double-ended needle and the container main body, the stopper being configured to be punctured by the first end of the double-ended needle when the needle case is pressed toward the container main body; and a check valve provided to an end of the stopper that faces the container main body, the check valve being configured to allow liquid communication, when the stopper is punctured by the double-ended needle, from the container main body to the double-ended needle and to prevent liquid communication from the double-ended needle to the container main body. a needle case which is removed when used; double-ended needle sterilely stored in the needle case and comprising a first end facing the container main body and an second end facing away from the container main body; a connecting portion formed at the first end of the double-ended needle and being heat-sealed with the container main body; a stopper provided in the connecting portion for preventing liquid communication between the double-ended needle and the container main body, the stopper being configured to be punctured by the first end of the double-ended needle when the needle case is pressed toward the container main body; and a check valve provided to an end of the stopper that faces the container main body, the check valve being configured to allow liquid communication, when the stopper is punctured by the double-ended needle, from the container main body to the double-ended needle and to prevent liquid communication from the double-ended needle to the container main body.