The invention discloses an ice block fixing chuck of a saline water block ice maker. The ice block fixing chuck comprises a fixes base, wherein a clamping part is arranged on the fixed base; an ejection pin is arranged in the clamping part in a stretchable manner; a handle is movably arranged at one end of the clamping part; the handle is movably connected to the ejection pin through a pair of connecting sheets; the handle is lifted, so that the connecting sheets push the ejection pin to clamp an ice block and prevent the ice block from sliding; antiskid rubber is arranged on the handle; and a spine part is arranged at the tail end of the ejection pin. The ice block fixing chuck of the saline water block ice maker disclosed by the invention can be fixed on a machine body through the fixed base. The handle is lifted to push the connecting sheets to drive the ejection pin to move. After the ejection pin is elongated, the front end of the ejection pin squeezes the ice block body or the spine part at the front end of the ejection pin pierces into the ice block, so that the ice block is hard to slide. The ice block does not slide even if the ice block is impacted or vibrated, so that the occurrence of accidents that the ice block hurts people is avoided, the operational safety is improved, and smooth and successive production is guaranteed.