PROBLEM TO BE SOLVED: To provide a vaporizer capable of achieving an increase in vaporization amount.SOLUTION: A partition part 101 is pulled out to allow a vaporization body 201 to fall on a sucking core 44 and the lower edge 203 of the vaporization body 201 is brought into contact with the sucking core 44. The liquid agent 2 sucked up by the sucking core 44 soaks into the vaporization body 201 to be vaporized from the vaporization body 201. The vaporization body 201 is arranged so that both of the front and rear surfaces 332 and 333 thereof are laterally directed in a thickness direction 331 wide in area and both of these surfaces can be utilized as vaporization surfaces.