Molded　pulp　is　considered　an　alternative　to　plastic　packaging　for　its　low　cost,　recyclability　and　non-pollution　characteristics.　However,　the　range　of　its　applications　has　been　limited　by　hydrophilicity　and　lipophilicity.　Presented　herein　is　a　facile　and　straightforward　method　for　the　preparation　biodegradable　water-　and　oil-repellant　for　molded　pulp.　Sodium　alginate-based　oil　repellent　and　PDMS-based　water　repellent　were　prepared　by　cross-linking　and　modification.　The　two　were　then　mixed　in　various　ratios　to　obtain　compound　water-　and　oil-repellent,　which　was　applied　to　the　molded　pulp　by　dip-coating.　The　coated　paper　demonstrated　excellent　oil　resistance　(with　a　kit　rating　of　11/12)　and　outstanding　water　resistance　(with　a　water　contact　angle　of　121.9°　and　water　absorption　of　25.8%).　This　novel,　eco-friendly,　water-　and　oil-resistant　molded　pulp　coating　prepared　from　biodegradable　and　food-contactable　materials　is　a　potential　candidate　to　replace　petroleum-based　coatings　and　has　excellent　possibilities　to　be　manufactured　on　a　large-scale　intended　for　food　and　non-food　contact　applications.　©　2023　by　the　authors.