In　order　to　uncover　the　characteristics　of　pedestrian　movement　under　different　social　distancing　measures,　we　performed　a　series　of　single-file　experiments　considering　two　types　of　social　distancing　measures,　namely　1　m　and　2　m,　and　compared　them　with　normal　experiments　conducted　before　Covid-19.　Firstly,　the　findings　indicate　that　social　distancing　measures　do　make　pedestrians　keep　a　greater　distance,　but　there　are　social　distance　violations.　When　the　density　is　greater　than　0.23　m(-1),　pedestrians　have　more　violations　under　the　measure　of　2　m　than　that　of　1　m　at　the　same　density.　Although　the　typical　stop-and-go　wave　is　still　observed　in　social　distancing　experiments,　the　increase　in　social　distancing　causes　pedestrian　stopping　behavior　to　occur　at　lower　density,　and　shortens　the　density　range　of　the　transition　from　free　flow　to　jammed　flow.　Moreover,　the　headway-speed　relation　under　social　distancing　measures　is　not　a　simple　horizontal　displacement　of　that　under　normal　conditions.　Although　their　free　speeds　are　similar,　the　increase　in　social　distancing　makes　pedestrians　need　longer　adaption　time　and　more　space　to　transform　the　motion　state.　Finally,　fundamental　diagrams　are　obtained,　and　the　maximum　specific　flows　for　social　distancing　of　1　m　and　2　m　is　0.62　s(-1)　and　0.53　s(-1),　respectively.　Apart　from　the　comparison　with　normal　conditions,　the　comparison　with　the　two-dimensional　social　distancing　experiments　shows　that　pedestrians　are　more　able　to　comply　with　the　prescribed　social　distance　and　stop　less　in　single-file　movement.　These　enrichments　offer　empirical　data　of　pedestrian　movement　under　different　social　distancing　measures　and　benefit　pedestrian　modeling　during　pandemics.