Safety heat-insulation liner of thermos bottle

The utility model relates to a safety heat insulation liner of a thermos bottle, comprising a glass inner wall, a glass outer wall whose bottom is provided with an air pumping tail pipe, and a vacuum layer which is clamped by the glass inner wall and the glass outer wall. The safety heat insulation liner of a thermos bottle is characterized in that the safety heat insulation liner of a thermos bottle also comprises an upper plastic layer which is covered on the outer surface of the glass outer wall. The safety heat insulation liner of a thermos bottle is adopted, the rupture of a glass bottle liner can be effectively prevented, and the occurrence of the phenomenon that boiled water current scalds a human body when the glass bottle liner ruptures can be effectively prevented.