The invention relates to a police-dog-sniffing-capacity testing device, and belongs to the technical field of police dog devices. The police-dog-sniffing-capacity testing device comprises a lifting platform and N sniffing testing baskets fixed on the periphery of an installing platform with an installing arm, and N is larger than or equal to 1; the sniffing testing baskets comprise sniffing cups and sample boxes which are combined together; i-1 filtering films are installed between the sniffing cup and the sample box of the ith sniffing testing basket, and i<[1,N]; air exhausting openings communicated with an air exhausting device are formed in the sniffing cups; the sample boxes are connected with the sniffing boxes through buckles. According to the police-dog-sniffing-capacity testing device, single smell is filtered through the filtering films with the different layers, the environments with different concentrations are formed in the sniffing cups in cooperation with the air exhausting device, and therefore the function that the police-dog sniffing capacity is subjected to quantization testing is achieved.