Nozzle keeping device and coating device

The invention relates to a device for keeping a nozzle and a coating device. The nozzle-keeping device keeps the nozzle which sprays liquid from an outlet to inferior part and comprises a projection part, a supplying piping, a storage mechanism and a cleaning fluid supplier. The projection part is configured on the position opposite with the nozzle outlet on top of a supplying port. The supplyingpiping communicates a supplying source for supplying the cleaning fluid and the supplying port. The storage mechanism is connected to the piping, and can store the cleaning fluid in the position of the storage mechanism which is closer to the upper part than top of the projection. The cleaning fluid supplier supplies the cleaning fluid from the supplying source, so that the nozzle-keeping device is in a state as below: the projection top is filled with the cleaning fluid and the storage mechanism is stored with the cleaning fluid.