The invention relates to a screen energy-saving normal-pressure coal-fired boiler which comprises a hearth, a water jacket interlayer, a dust-removing air chamber, a chimney and a grate, and is characterized in that: a multilayered heat exchange tube is arranged above the hearth in a slant way; the heat exchange tube is communicated with the water jacket interlayer; a spring-typed water pipe is arranged in the chimney; a ring-shaped heating pipe is arranged besides the side wall of the hearth; space is arranged between the ring-shaped heating pipe and the side wall of the hearth; the ring-shaped heating pipe is communicated with the water jacket interlayer by a connecting pipe; the grate is provided with an overturning-control mechanism; and a beehive grip head is arranged on the bottom of the hearth. The coal-fired boiler has high heat conversion rate and good energy-saving effect and can be served as a water heater or a tea boiler.