A driving safety detecting method, implemented by a in-vehicle computer of a vehicle with a intelligent wearable device worn on a user, comprises the following steps: the intelligent wearable device measuring and recording physiological information of the user； when receiving a signal representing unlocking a vehicle door or starting the vehicle, the in-vehicle computer also receiving the user's physiological information in the intelligent wearable device； the in-vehicle computer determining whether the user is in a state not suitable for driving based on the user's physiological information； and when the determining result is that the user is in the state not suitable for driving, the in-vehicle computer performing at least one of the following: prompting, temporarily suspending starting the vehicle, compulsively suspending starting the vehicle, therefore preventing the user from dangerous driving.一種行車安全檢測方法，由一車輛之一行車電腦配合一穿戴於一使用者之智慧型穿戴裝置執行，並包含以下步驟：該智慧型穿戴裝置量測並記錄該使用者之生理資訊；該行車電腦在當接收到一代表開啟門鎖或欲使車輛啟動之訊號，並接收該智慧型穿戴裝置中的該使用者之生理資訊；該行車電腦根據該使用者之生理資訊判斷該使用者是否處於一不適合開車之狀態；及該行車電腦在當判斷結果為該使用者處於該不適合開車之狀態，執行包括以下至少一者：發出提示、暫停車輛啟動、強制停止車輛啟動，從而能預先阻止使用者危險駕駛。
