To provide a network connection device and a network connection notification method that enable even a user who does not have much technical knowledge to accurately obtain necessary information when connecting to a network.

The network connection device 100 when connecting to the network through a LAN cable 104 decides whether the connection can be made with respect to three points of a communication rate, a communication mode (full-duplex, half-duplex), and an IP address of the device itself, and notifies the user of results with a voice from a speaker unit 105 and visual display information of characters, etc., using a display unit 106. When the IP address needs to be manually input, a handling method is shown for the user by using the display unit 106. An IP address stored in a storage unit 107 may be used.