Electronic cigarette atomization core and atomizer

An electronic cigarette atomizer, comprising:

• an electronic cigarette atomization core, wherein the electronic cigarette atomization core comprises:
• an atomization member (3), an outer sleeve (24), a connection sleeve (22), and atomization cotton (14), wherein:
• a lower segment of the connection sleeve (22) is sleeved outside an upper segment of the outer sleeve (24),
• the outer sleeve (24) is sleeved outside the atomization cotton (14), and
• the outer sleeve (24) is provided with a first e-liquid passage hole (2401) capable of communicating an inner cavity of an electronic cigarette e-liquid bin (12) with the atomization cotton (14);
• and
• the connection sleeve (22) is axially movable or circumferentially rotatable relative to the outer sleeve (24) to close or open the first e-liquid passage hole (2401), and
• a buffer sealing structure, for sealing the first e-liquid passage hole (2401) when the first e-liquid passage hole (2401) is closed, is arranged between the connection sleeve (22) and the outer sleeve (24).