The invention relates to an electronic simulation cigarette and an atomizer thereof. The electronic simulation cigarette comprises a simulation cigarette mouthpiece (20) and a cigarette stem (30). The cigarette stem (30) is provided therein with a battery and an electronic circuit. The simulation cigarette mouth piece (20) comprises a cigarette mouthpiece sleeve (25), a liquid reservoir apparatus (28), and the atomizer (10). The atomizer (10) and the liquid reservoir apparatus (28) are fixed within the cigarette mouthpiece sleeve (25). The atomizer (10) comprises a housing (11), a heating element (7) arranged within the housing (11), at least one liquid-guiding element (5, 6, 8, and 9) arranged around the heating element (7), and electrically conductive elements (1, 3, and 13) used for electrically connecting the heating element (7) to the battery. The housing (11) reserves therein a space for air flow. The at least one fluid-guiding element comprises a porous metal, preferably a porous nickel alloy (9).The at least one liquid-guiding element also comprises a ceramic (5) arranged between the porous nickel alloy (9) and the heating element (7). The at least one liquid-guiding element also comprises a linear fiber (6). The linear fiber (6) is in direct contact with the heating element (7). The present invention utilizes various liquid-guiding materials, allows a liquid in the liquid reservoir apparatus to be distributed adequately around the heating element, conserves raw materials, and improves atomization effect.