PROBLEM TO BE SOLVED: To provide a liquid vaporizer which enables long-term storage of liquid and can be brought into a usable state by a simple opening operation.SOLUTION: A liquid vaporizer 1, which includes a liquid container 2 storing a liquid M and vaporizes the liquid M in the liquid container 2 using a vaporizing body 5, includes: a suction body 4 which has a suction part 4a sucking the liquid M in the liquid container 2 and a lead-out part 4b leading out the liquid M sucked by the suction part 4a to the vaporizing body 5 and a fixing member 3 which has a holding part 14 holding the suction part 4a and a lid part 13 covering the lead-out part 4b, and fixes the suction body 4 to the liquid container 2. A fragile part 17 having reduced strength is provided at a boundary between the holding part 14 and the lid part 13 in the fixing member 3, whereby the lid part 13 can be broken with respect to the holding part 14.