Provided is a multi-slot die coater with reduced structural vulnerability to deformation and twist in the multi-slot die coater basically including three die blocks. The multi-slot die coater according to the present disclosure is a multi-slot die coater including a lower slot and an upper slot to extrude and coat a coating solution on a surface of a continuously moving substrate through at least one of the lower slot or the upper slot, and includes a lower die block, an intermediate die block and an upper die block. The multi-slot die coater includes a bolt fastened at contact surfaces between the lower die block, the intermediate die block and the upper die block, the bolt being at such an angle that a bolt head faces an upper exit port and a lower exit port.