Precautionary seizure is a preventive measure enacted to secure the creditor's right and temporarily protect him by judicial request, and it aims to place the debtor's movable and immovable property under the hands of the judiciary and prevent him from disposing of it, and it is also the creditor's responsibility and responsibility. Because of the importance of this issue, we have decided to explain its various provisions and the procedures for its signature in light of the Algerian Code of Civil and Administrative Procedure.