The purpose of this study was to determine the difference of the pinch strength according to testing posture(standing and sitting) and elbow flexion degree($0^{circ}$, $45^{circ}$, $90^{circ}$ and $135^{circ}$). Forty normal young adults(male: 20, female: 20, mean age: $22.68{pm}2.91$ years) participated in this study. The methods of this study were categorized as follows: 1) One set of measurement was performed on four elbow flexion degrees($0^{circ}$, $45^{circ}$, $90^{circ}$ and $135^{circ}$) in two testing postures(standing and sitting) and all subjects were measured for 3 sets testing procedures in every experimental sessions. 2) Pinch strength in various elbow flexion degree was measured after 2 min rest time, and then each test set was repeatedly performed with 5 min rest time to prevent fatigue of muscles involved in the elbow joint. The result was obtained as follow: 1) In standing posture, there was statistically significant difference at $0^{circ}$ and $45^{circ}$, $0^{circ}$ and $90^{circ}$, $0^{circ}$ and $135^{circ}$, $45^{circ}$ and $90^{circ}$, $45^{circ}$ and $135^{circ}$, $90^{circ}$ and $135^{circ}$. 2) In sitting posture, there was statistically significant difference at $0^{circ}$ and $45^{circ}$, $0^{circ}$ and $90^{circ}$, $0^{circ}$ and $135^{circ}$, $45^{circ}$ and $90^{circ}$, $45^{circ}$ and $135^{circ}$, $90^{circ}$ and $135^{circ}$. 3) Statistically, there was no significant difference between standing and sitting posture in same elbow flexion degree, however pinch strength in standing posture was higher than sitting posture.