The invention discloses an improved structure of a bendable eyelash brush. The improved structure of the bendable eyelash brush has the advantages that a brush body is entirely of a structure capable of bending at an optional angle and being kept bent, brush bristles are fixedly arranged on the portion close to the free end of the brush rod, and thereby during use, a user can use the eyelash brush by bending the middle of the brush rod at the optional angle or bending the brush bristles at the optional angle according to eyelash shapes and usage habits of the user; the user can use the eyelash brush by bending the brush rod or the brush bristles at the optional angle while the brush bristles or the brush rod is bent optionally; additionally, the brush rod and the brush bristles can be kept bent constantly during use after bending until the eyelash brush is straightened manually after the eyelash brush is not used; the improved structure of the bendable eyelash brush enables the eyelash brush to be well applicable to eyelash different in curling degree and to fully contact with short eyelash in the canthus parts, is capable of effectively preventing mascara from being applied to the parts such as the face during use and is convenient and practical.