Atomization device and electronic atomizer

The utility model provides an atomization device and an electronic atomizer, the atomization device comprises a shell assembly and an atomization assembly, and the shell assembly is provided with an inner cavity. The atomization assembly comprises an atomization piece and a first fixing piece, the atomization piece is arranged on the first fixing piece, the atomization piece and at least part of the first fixing piece are arranged in the inner cavity, the first fixing piece covers the opening of the inner cavity of the shell assembly, and part of the peripheral side wall of the first fixing piece abuts against the inner wall of the inner cavity. The peripheral side wall of the first fixing part is in interference fit with the inner wall of the inner cavity, so that the first fixing part and the shell assembly are fixed, a containing cavity used for containing liquid to be atomized is defined by the atomizing part, the first fixing part and the shell assembly, and the shell assembly and the first fixing part a