A product information query system, wherein the system comprises a photographing module, a distance detection module, an information query module, and a presentation module, and at least an overlapping area exists between a detection area of the distance detection module and a photographing area of the photographing module; when detecting that a distance between the distance detection module and a moving object falls within a predetermined distance range, the distance detection module sends a notification message used to instruct for enabling a query to the information query module; after receiving the notification message, the information query module obtains an image photographed by the photographing module, and performs, by using a product image feature extracted from the image, a query to obtain product details information corresponding to the product image feature, comprising: predicting a product location area of a to-be-queried product in the image based on a pre-trained product positioning model, comprising: determining, from an output result of the pre-trained product positioning model, based on a location relationship between a product location area belonging to a product type of a to-be identified product and an object location area belonging to an associated object type, a product location area whose distance from an associated object location area falls within a predetermined range as the product location area of the to-be-queried product; extracting, from the product location area in the image, the product image feature used to represent basic product information, and performing similarity comparison between the extracted product image feature and a sample product image feature to obtain basic product information of the to-be-queried product; and performing a query to obtain the product details information of the to-be-queried product by using the basic product information; and the presentation module presents the product details information. when detecting that a distance between the distance detection module and a moving object falls within a predetermined distance range, the distance detection module sends a notification message used to instruct for enabling a query to the information query module; after receiving the notification message, the information query module obtains an image photographed by the photographing module, and performs, by using a product image feature extracted from the image, a query to obtain product details information corresponding to the product image feature, comprising: predicting a product location area of a to-be-queried product in the image based on a pre-trained product positioning model, comprising: determining, from an output result of the pre-trained product positioning model, based on a location relationship between a product location area belonging to a product type of a to-be identified product and an object location area belonging to an associated object type, a product location area whose distance from an associated object location area falls within a predetermined range as the product location area of the to-be-queried product; extracting, from the product location area in the image, the product image feature used to represent basic product information, and performing similarity comparison between the extracted product image feature and a sample product image feature to obtain basic product information of the to-be-queried product; and performing a query to obtain the product details information of the to-be-queried product by using the basic product information; and predicting a product location area of a to-be-queried product in the image based on a pre-trained product positioning model, comprising: determining, from an output result of the pre-trained product positioning model, based on a location relationship between a product location area belonging to a product type of a to-be identified product and an object location area belonging to an associated object type, a product location area whose distance from an associated object location area falls within a predetermined range as the product location area of the to-be-queried product; extracting, from the product location area in the image, the product image feature used to represent basic product information, and performing similarity comparison between the extracted product image feature and a sample product image feature to obtain basic product information of the to-be-queried product; and performing a query to obtain the product details information of the to-be-queried product by using the basic product information; and the presentation module presents the product details information.