#$%^&*AU2017210618B120171214.pdf#####ABSTRACT A manual lifting sling device including a bottom support portion, a rear side support portion, a left side retainer portion and a right side retainer portion, at least two lift handles, a left foldable portion, and a right foldable portion; wherein the manual lifting sling device is configured to be switchable between a standby state in the form of a sheet and an operation state in the form of a seat.