The utility model relates to the technical field of power detection, particularly relates to a power on-site inspection device. A database communication interface is connected with a local database; the local database is connected with a processor; an identifier scanning unit is connected with the processor; a communication unit is connected with the processor; the communication unit is also connected with the communication interface. According to the power on-site inspection device, database information of a client terminal requires to be inspected is configured at any time according to a user requirement; the database information can be matched with inquired to-be-inspected terminal identifiers and accordingly communication parameters of a to-be-inspected terminal are obtained and various different to-be-inspected terminals are convenient for compatibility; a comparative result between standard data and data detected in real time is displayed through a spreadsheet of a screen and accordingly resource wasting in the prior art is avoided.