An atomization module of electronic cigarettes, the module comprising: an end cover; a seal ring; a meshed heating unit comprising a heating surface; an e-liquid conducting cotton comprising a first cotton surface and a second cotton surface that are opposite to each other; and a support comprising a support surface and at least one wall; wherein: the first cotton surface is disposed on the support surface; the meshed heating unit is disposed on the e-liquid conducting cotton, and the heating surface abuts against the second cotton surface; the meshed heating unit and the liquid conducting cotton are coaxially disposed around a central axis; the end cover is embedded in the support; the seal ring is disposed on the cover; characterized in that: the heating surface is a frustoconical surface comprising the central axis, the second cotton surface is a frustoconical surface corresponding to the heating surface; the height of the heating surface with respect to the support surface is increased along a radial direction away from the central axis; and the height of the second cotton surface with respect to the support surface is increased along the radial direction away from the central axis. an end cover; a seal ring; a meshed heating unit comprising a heating surface; an e-liquid conducting cotton comprising a first cotton surface and a second cotton surface that are opposite to each other; and a support comprising a support surface and at least one wall; wherein: the first cotton surface is disposed on the support surface; the meshed heating unit is disposed on the e-liquid conducting cotton, and the heating surface abuts against the second cotton surface; the meshed heating unit and the liquid conducting cotton are coaxially disposed around a central axis; the end cover is embedded in the support; the seal ring is disposed on the cover; characterized in that: the heating surface is a frustoconical surface comprising the central axis, the second cotton surface is a frustoconical surface corresponding to the heating surface; the height of the heating surface with respect to the support surface is increased along a radial direction away from the central axis; and the height of the second cotton surface with respect to the support surface is increased along the radial direction away from the central axis. wherein: the first cotton surface is disposed on the support surface; the meshed heating unit is disposed on the e-liquid conducting cotton, and the heating surface abuts against the second cotton surface; the meshed heating unit and the liquid conducting cotton are coaxially disposed around a central axis; the end cover is embedded in the support; the seal ring is disposed on the cover; the first cotton surface is disposed on the support surface; the meshed heating unit is disposed on the e-liquid conducting cotton, and the heating surface abuts against the second cotton surface; the meshed heating unit and the liquid conducting cotton are coaxially disposed around a central axis; the end cover is embedded in the support; the seal ring is disposed on the cover; characterized in that: the heating surface is a frustoconical surface comprising the central axis, the second cotton surface is a frustoconical surface corresponding to the heating surface; the height of the heating surface with respect to the support surface is increased along a radial direction away from the central axis; and the height of the second cotton surface with respect to the support surface is increased along the radial direction away from the central axis. the heating surface is a frustoconical surface comprising the central axis, the second cotton surface is a frustoconical surface corresponding to the heating surface; the height of the heating surface with respect to the support surface is increased along a radial direction away from the central axis; and the height of the second cotton surface with respect to the support surface is increased along the radial direction away from the central axis.