The invention provides a storage bag type pen-shaped water bowl, and relates to water bowls. The storage bag type pen-shaped water bowl comprises a pen-cap cover, a suction mouth, a water inlet, a buckle, a pen cap shell, a flexible curved tube, a pen body shell, a suction nozzle and a suction nozzle cover. The water inlet is formed in the middle of the top end of the pen cap shell, the buckle is arranged on one side of the pen cap shell, the pen cap cover is arranged on the outer layer of the other side of the pen cap shell, the suction mouth is arranged in the inner layer of the other side of the pen cap shell, and the pen cap cover is connected with the suction mouth. When water is stored in the storage bag type pen-shaped water bowl, the suction mouth attached to the pen cap cover can be inserted into the water inlet, and a user can drink the water. The pen cap shell is connected with the pen body shell through the flexible curved tube, the flexible curved tube is communicated with the suction nozzle at the bottom of the pen body shell, the suction nozzle cover is arranged on one side of the bottom end of the pen body shell, the suction nozzle cover can be stretched or compacted, and the suction nozzle cover is a container bag capable of storing the water when being stretched. The storage bag type pen-shaped water bowl is simple in structure and easy to manufacture, can be suitable for being used for not only drinking equipment provided with special water dispenser external connectors but also other drinking devices, is convenient for the user to drink the water directly at any time or stretch the suction nozzle cover into the container bag to store the water, can recover into a pen shape after being used, and is convenient to carry.