The invention relates to a method capable of visually reading a detection result. The method adopts a detection device, the detection device comprises a sample detection layer and a symbol display layer, the symbol display layer is positioned on the sample detection layer, an indicator is arrange don the symbol display layer, the indicator is changed into a second color from a first color after contacting with gas, the colors of the indicator can be changed by the gas, and the indicator and a testing result on the sample detection layer form an identifiable symbol. The invention further discloses a sample detection method capable of visually reading the detection result and a method for manufacturing the detection device. According to the method and the detection device capable of visuallyreading the detection result, the detection result can be stably and definitely displayed and is more visually acquired by a common operator, so that the use crowd and the use range of the detectiondevice are wider.