This　paper　aims　to　study　the　creep　properties　of　potassium　magnesium　phosphate　cement　from　nanoscale　to　macroscale.　In　this　paper,　nanoindentation　technology　and　statistical　deconvolution　theory　are　used　to　study　the　creep　properties　of　individual　phase　in　potassium　magnesium　phosphate　cement　in　the　nanoscale.　Then,　the　creep　modulus　of　individual　phase　in　potassium　magnesium　phosphate　cement　are　determined.　Through　micro　indentation　test　in　this　paper,　the　micro　indentation　method　cannot　predict　the　macro　creep　properties　of　potassium　magnesium　phosphate　cement　due　to　its　easy　cracking　property.　The　compositions　and　volume　fractions　of　phases　in　potassium　magnesium　phosphate　cement　are　determined　by　XRD,　TG　and　MIP.　Based　on　the　homogenization　theory　and　creep　parameters　of　each　phase,　a　theoretical　model　for　predicting　and　adjusting　the　creep　performance　of　magnesium　phosphate　cement　is　proposed,　and　by　compared　with　the　macro　creep　data,　the　accuracy　of　the　model　is　verified.