The invention relates to a household garbage vertical burning rotary grate furnace system, which comprises a discharge transmission device, a bracket, a slag discharge pipe, an annular air duct, a multilayer tower grate, a burning furnace main body, a transmission upright post, a draft fan, a Roche fan, a rotary feed distribution device, a garbage feed dryer, a cam device, a feed transmission device, a fuel gas connecting hood, a feeding outer cylinder, a feeder, a feeding hopper, a fuel gas circuit pipe, a fuel gas connecting hood, a feed connecting hood and a secondary blower, wherein the bracket supports the burning furnace main body; the lower part of the burning furnace main body is provided with the multilayer tower grate; the lower part of the multilayer tower grate is connected with the slag discharge pipe; the discharge transmission device is connected with the multilayer tower grate through the transmission upright post; the top over of the burning furnace main body is provided with the rotary feed distribution device; the annular air duct is arranged on the burning furnace main body at the position where the multilayer tower grate is arranged; the garbage feed dryer is provided with the cam device and the feed transmission device; a garbage transmission pipe is connected with the rotary feed distribution device through the fuel gas connecting hood; the feeding hopper is connected with the garbage transmission pipe through the feeding outer cylinder and the feeder; the fuel gas circuit pipe is connected with the garbage transmission pipe and the connector of the feeding outer cylinder through the fuel gas connecting hood; and the fuel gas circuit pipe is connected with the gas outlet of the burning furnace main body through the secondary blower.