A liquid injecting structure for an electronic atomizing device, comprising: an outer tube and a liquid injection assembly disposed in the outer tube; wherein, the outer tube defines an inlet port, the liquid injection assembly comprises a switch assembly, the switch assembly is rotatable between an injecting position and a working position relative to the outer tube; the switch assembly comprises a liquid injection tube which defines an injecting port; and when the switch assembly is in the injecting position, the injecting port is fluidly communicated with the inlet port, such that liquid can be injected into a liquid storage cavity; and when the switch assembly is in the working position, the injecting port is isolated from the inlet port; wherein the switch assembly comprises a first sealing member which is circumferentially fixed with the liquid injection tube and rotates synchronously with the liquid injection tube, wherein the first sealing member is connected to the liquid injection tube either directly or by means of a connecting shaft, and the first sealing member defines a first flow port; and when the switch assembly is in the injecting position, the inlet port is fluidly communicated with the injecting port via the first flow port; and when the switch assembly is in the working position, the first flow port is isolated from the inlet port; characterized in that the outer tube further defines an exhaust port for exhausting air in the liquid storage cavity, and an outlet passage for allowing the exhaust port to be fluidly communicated with an outer atmosphere is defined between the outer tube and the liquid injection assembly; and when the switch assembly is in the injecting position, the exhaust port is fluidly communicated with the outlet passage; and when the switch assembly is in the working position, the exhaust port is isolated from the outlet passage. the outer tube defines an inlet port, the liquid injection assembly comprises a switch assembly, the switch assembly is rotatable between an injecting position and a working position relative to the outer tube; the switch assembly comprises a liquid injection tube which defines an injecting port; and when the switch assembly is in the injecting position, the injecting port is fluidly communicated with the inlet port, such that liquid can be injected into a liquid storage cavity; and when the switch assembly is in the working position, the injecting port is isolated from the inlet port; wherein the switch assembly comprises a first sealing member which is circumferentially fixed with the liquid injection tube and rotates synchronously with the liquid injection tube, wherein the first sealing member is connected to the liquid injection tube either directly or by means of a connecting shaft, and the first sealing member defines a first flow port; and when the switch assembly is in the injecting position, the inlet port is fluidly communicated with the injecting port via the first flow port; and when the switch assembly is in the working position, the first flow port is isolated from the inlet port; characterized in that the outer tube further defines an exhaust port for exhausting air in the liquid storage cavity, and an outlet passage for allowing the exhaust port to be fluidly communicated with an outer atmosphere is defined between the outer tube and the liquid injection assembly; and when the switch assembly is in the injecting position, the exhaust port is fluidly communicated with the outlet passage; and when the switch assembly is in the working position, the exhaust port is isolated from the outlet passage.