The present invention provides an endoscope joint structure with multiple curvatures, which comprises: a backbone with elasticity at least one joint plate fixed on the backbone, the at least one joint plate being provided with at least one pair of through holes penetrating the plate surface and at least one hollow portion a head connecting member and a tail connecting member, which are respectively configured at the head and the tail of the backbone and at least one control cable penetrating the tail connecting member and the through hole of the at least one joint plate and fixed at the head connecting member, wherein the backbone is defined as a front section and a rear section. The distance between the at least one joint plate located at the front section of the backbone and the head connecting member is greater than the distance between the at least one joint plate located at the rear section of the backbone and the tail connecting member. Thus, the present invention may achieve the effects of easy manufacturing, lower cost and providing different curvatures.一種具有複數彎曲曲率的內視鏡關節構造,包含有:一骨幹,具有彈性;至少一關節板,固設於該骨幹上,該至少一關節板具有貫穿其板面的至少一對穿孔以及至少一鏤空部;一頭端連接件及一尾端連接件,分別設於該骨幹的頭端及尾端;以及至少一控制纜,穿過該尾端連接件以及該至少一關節板之穿孔,而固定於該頭端連接件;其中,定義該骨幹分為前段及後段,位於該骨幹前段的該至少一關節板與該頭端連接件之間的間距係大於位於該骨幹後段的該至少一關節板與該尾端連接件之間的間距。藉此,具有容易生產,成本更低,且具有不同彎曲曲率的效果。10‧‧‧具有複數彎曲曲率的內視鏡關節構造11‧‧‧骨幹21‧‧‧關節板24‧‧‧鏤空部31‧‧‧頭端連接件41‧‧‧尾端連接件51‧‧‧控制纜59‧‧‧彈簧D1,D2‧‧‧間距F‧‧‧前段R‧‧‧後段
