Vertical two-way mixer adopts mixing arm with vertical bidirectional stirring. It has the advantage of mixing uniformly, short stirring time, high efficiency. The mixing paddle adopts alloy material which can reduce maintenance cost and increase service life. Mixing device is in the upper end of the mixer, compared with the ordinary JS500 mixer, completely avoid the problem of shaft end leakage. It is widely used in high-speed rail, highway, cement products and other industries.