A microtube picking device for pharmaceutical development in which the picking of a selected microtube from a storage rack can be reliably carried out without producing friction in a latch member and without shifting the position of the microtube when it is reinserted into the storage rack. The microtube picking device has a picking member with a microtube accommodating hole whose internal surfaces are arranged in a polygonal array. The device also has at least one latch member having elastic force, which presses and fixes the microtube to two adjacent surfaces of the microtube accommodating hole.