Labeling mechanism for reagent bottles

The invention relates to a labeling mechanism for reagent bottles. The labelling mechanism comprises a machine box body, wherein a workbench is transversely and fixedly mounted at the top of the machine box body, and a reagent bottle arranging and conveying mechanism is arranged at the end, away from a reagent bottle guiding-out plate, of the workbench. Firstly, a large number of reagent bottles are placed in the reagent bottle arranging and conveying mechanism, a rotating motor drives the reagent bottles to start to rotate through a rotating disc, an arc-shaped elastic arc-shaped strip plays a role in blocking the reagent bottles during rotation; and under blocking of the arc-shaped elastic arc-shaped strip, the reagent bottles can only pass through a gap between the arc-shaped elastic arc-shaped strip and an outer shell; under the condition, more reagent bottles can be blocked, so that the condition that the reagent bottles topple over can be prevented, part of the reagent bottles can be ensured to be attached to the inner wall of the outer shell to be arranged in sequence, and the reagent bottles can be ensured to enter the reagent bottle guide-out channel in order.