A sit and reach detector system and method thereof are disclosed. The sit and reach detector system comprises: a body forward bending length test module with a base point having a movable element and two leaning elements an identity recognition module for identifying the identification mark of user an output module for outputting an instruction a communication module for wirelessly transmitting measurement result to a data base and a control module. The identity recognition module actuates the control module to make the output module to output the instruction after identifying the identification mark of user, and then feet of the user lean against the leaning elements and the user moves the movable element according to the instruction to make the movable element apart from the base point a distance to obtain a body forward bending length value, and a measurement result is obtained by the control module according to the body forward bending length value and wirelessly transmitted to the database.本發明揭示一種坐姿體前彎檢測器系統及其方法。坐姿體前彎檢測器包含:設有基準點之體前彎長度測試模組,具有移動件及兩個抵頂件;身分識別模組,用以識別使用者之身分標記;輸出模組,用以輸出指令;通訊模組,用以無線傳輸量測結果至資料庫;以及控制模組。當身分識別模組識別使用者之身分標記後,身分識別模組即啟動控制模組以令輸出模組輸出指令,使用者之雙腳抵頂抵頂件並依據指令推動移動件以使移動件相距基準點一距離而得體前彎長度值,控制模組依據體前彎長度值而得量測結果並藉由通訊模組無線傳輸至資料庫。100‧‧‧坐姿體前彎檢測器系統10‧‧‧體前彎長度測試模組12‧‧‧基準點14‧‧‧抵頂件16‧‧‧移動件18‧‧‧導桿19‧‧‧導槽20‧‧‧身分識別模組30‧‧‧輸出模組40‧‧‧通訊模組50‧‧‧控制模組60‧‧‧校正點70‧‧‧感應器80‧‧‧加密模組90‧‧‧電源供應單元M‧‧‧身分標記D1‧‧‧方向R‧‧‧刻度尺
