The invention relates to a multifunctional water boiling device comprising a power supply base and an electric kettle body which is provided with a heating plate at the bottom; an upper portion of the electric kettle is provided with a clamping seat; a ring of clamping slot is installed on the clamping seat; the electric kettle is also provided with a material bag accommodating tube therein; through openings are distributed on a wall of the material bag accommodating tube; an upper portion of the material bag accommodating tube is provided with a clasp and is fixed on the clamping slot through the clasp; an upper portion of the kettle mouth of the electric kettle body is leveled with the kettle port of the electric kettle body; a front end of a kettle cover of the electric kettle body is hinged to a kettle mouth cover covering the kettle mouth; a kettle mouth filter board is fixed at a front end of the kettle cover; the kettle mouth filter board is positioned at a lower portion of the kettle mouth cover and is leveled with the kettle cover. According to the invention, by means of reasonable structure design, the problems such as sticking, spilling, bumping and poor insulation of traditional electric kettle during cooking seaweed and egg soup are solved.