The invention discloses an electronic atomizer and an electronic atomizing device with the same, and belongs to the field of electronic cigarettes. The electronic atomizer is characterized by comprising an atomizing cavity housing, a tobacco tar bin housing, an upper cover, a mouth piece, a lower base and an electrode holder, wherein an atomizing cavity is formed in the atomizing cavity housing, and the atomizing cavity housing is connected with the upper cover and the lower base in a sealed manner; the tobacco tar bin housing is connected with the upper cover and the lower base in a sealed manner, and a tobacco tar bin is defined by the upper cover, the tobacco tar bin housing, the atomizing cavity housing and the lower base; the mouth piece is arranged on the upper cover in a sealed manner and communicated with the atomizing cavity; the electrode holder is arranged at the lower end of the lower base; a positive seat body is arranged at the upper end of the lower base, electrically insulated from the lower base and electrically connected with the electrode holder; the positive seat body is provided with a positive electrode mast, the lower base is provided with a negative electrode mast, and an atomizing core mounting hole is formed between the positive electrode mast and the negative electrode mast. According to the electronic atomizer, tobacco tar is stored through the tobacco tar bin, so that the problem that tobacco tar needs to be repeatedly added in the prior art is radically solved.