The double shaft paddle weightless mixer is more suitable for the mixing of materials with similar specific gravity. The double-shaft paddle mixer is equipped with double shaft counter rotating paddles. The paddles are overlapped and form a certain angle. The paddles rotate and throw the material into the space fluid layer, resulting in instant weightlessness and falling into each other's area., the material is mixed back and forth, forming a fluidized weightless zone and a rotating vortex in the middle. The material moves radially along the shaft, thus forming an all-round compound cycle and quickly achieving uniform mixing.