A testing system is provided. The system includes a testing device and a portable device. The testing device includes a first connector, a signal converting unit, a transmitting member, and a receiving member. The portable device includes a display unit, a second connector, a testing module, and an analyzing module. The testing module transmits a testing direct current signal to the signal converting unit through the first connector and the second connector. The signal converting unit converts the testing direct current signal to a pulse electrical signal and transmits the pulse electrical signal to the emission member. The transmitting member converts the pulse electrical signal to a supersonic signal. The receiving member receives the supersonic signal and converts the supersonic signal to electrical signal, and transmits the electrical signal to the signal converting unit. The signal converting unit converts the electrical signal to feedback digital signal and transmits the feedback digital signal to the testing module. The testing module calculates the interval time from transmitting the testing direct current to receiving the feedback digital signal. The analyzing unit analyzes the bone density according to the interval time. The display unit displays the testing result.一種測試系統,該系統包括一測試裝置和一移動裝置,該測試裝置包括一第一連接埠,一信號轉換單元,一發射端和一接收端,該移動裝置包括一顯示單元,一第二連接埠,一測試模組和一分析模組,該測試模組通過第一連接埠和第二連接埠將測試直流電信號傳給信號轉換單元,該信號轉換單元轉換成脈衝電信號給發射端,該發射端轉換成超聲波信號,接收端將該超聲波信號轉換成電信號後傳給信號轉換單元,該信號轉換單元轉換成回饋數位信號傳送給測試模組,測試模組計算間隔時間,該分析模組計算骨質密度,顯示單元顯示該檢測結果。1‧‧‧測試裝置2‧‧‧移動裝置11‧‧‧信號轉換單元13‧‧‧發射端14‧‧‧接收端15‧‧‧第一連接埠21‧‧‧第二連接埠200‧‧‧處理單元201‧‧‧顯示單元202‧‧‧測試模組203‧‧‧分析模組204‧‧‧判斷模組
