To provide a transfer device of Pachinko balls which can easily transfer Pachinko balls contained in a box to a winning ball saucer without spilling them out.

A magnet storage case which contains a magnet and an operation part which performs up-and-down operation between a sucking Pachinko ball position where the magnet contained in the magnet storage case is lowered and a releasing sucked Pachinko ball position where the magnet is raised are provided. The magnet storage case comprises a magnet storage part which contains a magnet holder so that it can go up and down, an operation lever guide part which guides an up-and-down operation lever standing on the magnet holder and an attachment part of the operation part which extends out of the operation lever guide part, the operation lever is attached with a biasing means which elevates and biases the magnet held in the magnet holder to the releasing sucked Pachinko ball position and an operation part is attached to the attachment part of the operation part so that it can be pushed down to the sucking Pachinko ball position against the elevating/biasing power of the biasing means.