The utility model discloses a vertical humidifier and relates to the field of humidifiers. A heating tube is arranged in a humidifier body, one end of the heating tube is connected with high-temperature glass through a mounting part, glass positioning rings are arranged at two ends of the high-temperature glass respectively, an outer end cover and an inner end cover are arranged on two sides of each glass positioning ring respectively and fixedly connected through an end cover screws, and a silicon rubber piece is arranged between each glass positioning ring and each of the corresponding outer end cover and the corresponding inner end cover. A mounting plate is mounted on one side of the humidifier body, two ends of the mounting plate are fixedly mounted on a container through screws, a steam spray pipe is connected to one side of the humidifier body, and the lower end of the humidifier body is provided with a water flow port. The vertical humidifier is reasonable in structural design, simple in operation and convenient to use; by a vertically-mounted humidifying boiler, the interior of the container can be humidified directly without leading pipelines inside, humidifying effects are improved, and utilization requirements of people are met.