To provide a discharge member with a filter which enables a filtrate to be dripped into a dripping container while filtering a suspension, enables an excessive portion to be suctioned when the dripped amount is excessive, thereby to allow a fixed amount of a filtrate to be injected into the dripping container, and thus enables suctioning operation of at the time of suctioning an excessive portion to be conducted preferably without deteriorating its dripping performance and filtering performance, a filter F provided in the discharge member 4 with a filter is a composite filter in which a pre-filter PF comprising a continuous porous foam that is softened at least in a wet state is arrange on the filtration surface side of a membrane filter MF.