The utility model discloses a multifunctional signal alarm umbrella. The multifunctional signal alarm umbrella is characterized in that a three-color light emitting diode (LED) capable of respectively showing red, blue, green and white colors is arranged at the tip of the umbrella; the umbrella tip three-color LED is controlled by a touch switch, and the touch switch is arranged on an umbrella handle; the touch switch can be arranged on the end face of the tail of the umbrella handle, and can also be arranged on the upper part of the umbrella handle, namely at a thumb position where the umbrella handle is held by hand, so that the touch switch is convenient to operate; a battery for supplying power to the umbrella tip three-color LED is arranged in the umbrella handle; and the battery, the switch and the three-color LED are sequentially connected by a lead. Basic functions of the umbrella are met, and functions of help prompt, taxi prompt, road crossing traffic prompt and illumination, so that convenience is brought to a user; and the umbrella is convenient to manufacture and install and low in cost.