The invention provides a device for synchronously positioning a plurality of persons. The device comprises a data collecting module and a synchronous positioning module, wherein the data collecting module comprises at least two types of sensors which are arranged in a distributing manner and are used for collecting original information of users; the first type of sensors are used for collecting action information of the users; the second type of sensors are used for collecting information with user identity mark; the synchronous positioning module is used for receiving original information from the data collecting module, and classifying the users according to the user identity relationship. The invention correspondingly provides a method for synchronously positioning a plurality of persons. According to the device and the method for synchronously positioning a plurality of persons, various types of data are collected on a large scale according to the technical scheme under the condition of group interaction, so that the number of users, who are allowed to participate in interaction, is increased; a plurality of persons are positioned synchronously, therefore the requirement that interactive instructions from different users are respectively responded is met.