This disclosure provides oil filling and labeling apparatuses for atomizers of electronic cigarettes, which include a rack provided with a table board. A material pick-up operation position, an oil filling operation position, an assembling operation position, a labeling operation position and a pressing operation position for silicon rubber sleeve are provided on the table board. The oil filling and labeling apparatuses for the atomizers of the electronic cigarettes further include a material loading mechanism, an oil filling mechanism, a mechanism for mounting oil-sealing ring, a mechanism for mounting end cap, an electric resistance detection mechanism, a first material rotation mechanism, a labeling mechanism, a second material rotation mechanism and a mechanism for pressing silicon rubber sleeve. The atomizer of the electronic cigarette is successively conveyed for processing among such mechanisms.