An early detection electronic device (1, 5) of diabetic foot for lesion in the blood circulation detects foot temperatures and includes a base (10, 50), a first temperature detector (12, 12, 52, 52), a second temperature detector (14, 54, 54), and a microprocessor (16, 56). The base (10, 50) includes a platform part (100, 500), a first arranging part (102, 502), and a second arranging part (104, 504). The first arranging part (102, 502) is connected to the platform part (100, 500) and the second arranging part (104, 504). The first temperature detector (12, 12, 52, 52) is arranged on the first arranging part (102, 502) and detects foot temperature along a first axis (A1). The second temperature detector (14, 54, 54) is arranged on the second arranging part (104, 504) and detects foot temperature along a second axis (A2). There is an included angle between the first axis (A1) and the second axis (A2). The microprocessor (16, 56) receives the temperatures detected by the first temperature detector (12, 12, 52, 52) and the second temperature detector (14, 54, 54), and generates a warning signal when the first temperature is lower than the second temperature.
