The invention relates to a silicon material selection device, and belongs to the technical field of photovoltaics. By means of the device, the problem that in the prior art, the silicon material selection purity is low is solved. The silicon material selection device comprises a rack and a box, wherein a feeding hopper is arranged on the box, a first magnetic roller and a power device for drivingthe first magnetic roller to rotate are arranged in the box, the first magnetic roller rotates anticlockwise, the first magnetic roller comprises a first rotating cylinder and an arc-shaped first magnetic system arranged on the left side of the magnetic roller, a silicon material collecting bucket is arranged on the left side of a portion under the first magnetic roller, a first impurity collection bucket is arranged on the right side of the portion under the first magnetic roller, a scraping board is arranged on the portion, on the right side of the first magnetic roller, located above the first impurity collection bucket, an impurity collection roller is arranged over a portion on the right side of the first magnetic roller, and the impurity collection roller is an electromagnet in a cylinder shape. According to the silicon material selection device, through the first magnetic roller, primary selection is conducted, and through a material falling board, secondary selection is conducted, so that selected recovered silicon material magnetic impurities are minimum, and the purity of a silicon material is effectively improved.