The utility model relates to a simple test bottle for saprogen, and mainly solves the problems of complex structure, cumbersome operation program and high cost of the conventional testing instrument for saprogen. The simple test bottle is characterized in that the bottle mouth of a glass bottle (3) is sealed by a rubber plug (1); the rubber plug (1) and the exterior of the bottle mouth are coated by an aluminum sheet cover (2); a saprogen test liquid (4) is arranged in the glass bottle (3) of which the volume is 7 ml; the size of the saprogen test liquid (4) is 4.5 ml; a rubber anti-slip sleeve (5) is stuck outside the glass bottle (3); and a circular arc groove is formed in the outer surface of the rubber anti-slip sleeve (5) in the horizontal direction. The simple test bottle has the characteristics of low cost, high efficiency, simplicity and fastness in testing, accuracy, long retention time, portability, and convenience in use.