Abstract: A rain water collecting device for an umbrella includes a reservoir (6) with a closed end and an open end. A diaphragm (10) is mounted in the reservoir (6) adjacent to the open end to separate the reservoir (6) into a first compartment (62) and a second compartment (64). A receiving member (5) is mounted in the center of the diaphragm (10) and extends into the first compartment (62) for removably receiving a tip of the umbrella. A first coil tube (8) mounted in the first compartment (62) has a inlet (3) located at the diaphragm (5) and an outlet (4) in the first compartment (62). A second coil tube (9) mounted in the second compartment (64) has an inlet (1) located at the diaphragm (5) and an outlet (2) in the second compartment (64). When the umbrella is folded after use, the rain water is guided into the first compartment (62) via the first coil tube (8).