A crucible feeder mechanism used in an elementary analysis device heating a sample accommodated in a crucible to extract and analyze an element contained in the sample as a gas component, comprising: an inclined surface on which a plurality of crucibles is placed, the inclined surface is formed on an upper surface of a flat plate that is mounted on a device main body; a guide member having an outlet port formed at a lower end of the inclined surface with respect to an inclination direction of the inclined surface, and adapted to guide one of the crucibles sliding down the inclined surface by the crucible's own weight toward the outlet port; and a crucible moving mechanism provided between the outlet port of the guide member and a feed port for feeding the crucibles, and adapted to move one of the crucibles that has slid down to the outlet port to the feed port, wherein the crucible moving mechanism includes a crucible moving body provided at the outlet port of the guide member and having a concave accommodation portion for accommodating therein one of the crucibles that has slid down the inclined surface, the concave accommodation portion being formed on a circumferential surface portion of the crucible moving body; and a driving part driving the crucible moving body to move between an accommodation position at which the concave accommodation portion receives and accommodates therein one of the crucibles and a feed position at which the concave accommodation portion communicates with the feed port and the crucible accommodated in the concave accommodation portion is dropped to the feed port, wherein the crucible moving body and the flat plate are made separable from the driving part; wherein a separation and connection mechanism Z facilitates detaching the crucible moving body and the flat plate from a device main body, wherein said separation and connection mechanism is provided between a rotary shaft connected to the crucible moving body and a driving shaft of the driving part, wherein said separation and connection mechanism is configured to include a concave portion and a convex portion Z provided on one of said rotary shaft and said driving shaft to be detachable axially and engaged with each other so as not to be rotatable relatively to each other when being connected to each other. an inclined surface on which a plurality of crucibles is placed, the inclined surface is formed on an upper surface of a flat plate that is mounted on a device main body; a guide member having an outlet port formed at a lower end of the inclined surface with respect to an inclination direction of the inclined surface, and adapted to guide one of the crucibles sliding down the inclined surface by the crucible's own weight toward the outlet port; and a crucible moving mechanism provided between the outlet port of the guide member and a feed port for feeding the crucibles, and adapted to move one of the crucibles that has slid down to the outlet port to the feed port, wherein the crucible moving mechanism includes a crucible moving body provided at the outlet port of the guide member and having a concave accommodation portion for accommodating therein one of the crucibles that has slid down the inclined surface, the concave accommodation portion being formed on a circumferential surface portion of the crucible moving body; and a driving part driving the crucible moving body to move between an accommodation position at which the concave accommodation portion receives and accommodates therein one of the crucibles and a feed position at which the concave accommodation portion communicates with the feed port and the crucible accommodated in the concave accommodation portion is dropped to the feed port, wherein a crucible moving body provided at the outlet port of the guide member and having a concave accommodation portion for accommodating therein one of the crucibles that has slid down the inclined surface, the concave accommodation portion being formed on a circumferential surface portion of the crucible moving body; and a driving part driving the crucible moving body to move between an accommodation position at which the concave accommodation portion receives and accommodates therein one of the crucibles and a feed position at which the concave accommodation portion communicates with the feed port and the crucible accommodated in the concave accommodation portion is dropped to the feed port, the crucible moving body and the flat plate are made separable from the driving part; wherein a separation and connection mechanism Z facilitates detaching the crucible moving body and the flat plate from a device main body, wherein said separation and connection mechanism is provided between a rotary shaft connected to the crucible moving body and a driving shaft of the driving part, wherein said separation and connection mechanism is configured to include a concave portion and a convex portion Z provided on one of said rotary shaft and said driving shaft to be detachable axially and engaged with each other so as not to be rotatable relatively to each other when being connected to each other.