The　mechanical　properties　of　eggshell　membrane　(ESM)　are　comparable　to　those　of　human　patellar　tendon　or　skin.　This　paper,　based　on　static　and　dynamic　nanoindentation　technique,　studied　the　time-dependent　behavior,　i.e.,　creep　and　relaxation　of　the　ESM.　The　effect.　of　loading　level,　loading　rate　and　holding　time　on　viscoelastic　behavior　were　discussed　by　using　the　static　measurement　method　of　nanoindentation.　The　storage　modulus,　loss　modulus　and　loss　factor　were　obtained　as　a　function　of　frequency.　It　was　found　that　the　outer　membrane　(OM)　exhibits　more　apparent　relaxation　properties　and　stronger　capacity　to　resist　creep　deformation　than　that　of　the　inner　membrane　(IM).　In　addition,　the　loss　factor　of　the　IM　is　larger　than　that　of　the　OM　which　caused　a　larger　viscous　damping　of　IM.　This　work　can　contribute　to　the　bioinspired　applications　of　ESM.