Oxygen bottle trolley

The utility model discloses an oxygen bottle cart, and relates to the field of hospital supplies. The oxygen bottle trolley can be pushed along with a patient transfer bed. The oxygen bottle trolley comprises a trolley frame, a bottle supporting plate, main wheels, auxiliary wheel assemblies and a bed guardrail connecting structure; the number of the auxiliary wheel assemblies is two, the two auxiliary wheel assemblies are located on the left side and the right side of the cart frame respectively, each auxiliary wheel assembly comprises an auxiliary wheel, and the auxiliary wheels are located above the bottle supporting plate. The auxiliary wheel assembly can be adjusted to a working position, at the moment, the auxiliary wheels are located below the bottle supporting plate, and the auxiliary wheels and the main wheels jointly support the cart frame; the bed guardrail connecting structure is located behind the cart frame and connected with the cart frame. The bed guardrail connecting structure comprises a fro