Ernakulam Junction Railway Station is considered as the major railway station in Kochi as well as in India. It is the largest railway station in the city of Kochi. The railway station is administered by the Southern Railway department of the Indian Railways and comes under the Thiruvananthapuram Railway Division. Ernakulam Junction railway station is well connected with major parts of the country. It is a junction, joining lines going in four different directions namely: north towards Shornur, south towards Alappuzha, south-west towards Willingdon Island and east towards Kottayam. Due to the loop structure of the tracks, trains going from the Thrissur side to the Kottayam side have to turn their directions, whereas those travelling for Alappuzha do not face this problem.

The Ernakulam Junction Railway station is one of the major railway stations in Kerala with trains to any part of India and also one of the A1 graded stations in the Southern Railway. The station also has a Train Care Centre in its premises. The station provides several facilities to the passengers like, ATM Services, Waiting Rooms, Food Stalls, Book Stalls, etc.

Naming of Ernakulam Junction Railway Station
Ernakulam Junction Railway Station is known as "Ernakulam South" or simply "South" amongst the local people. The reason behind this name is to distinguish it from Ernakulam Town which in turn is named as "Ernakulam North" or simply "North". Some very significant trains like H. Nizamuddin - Trivandrum Rajdhani Express passes through this station.

Structure of Ernakulam Junction Railway Station
Ernakulam Junction Railway Station has 6 platforms to handle long-distance and passenger trains. The railway station has two entrances. The main entrance is near to the Chittor road. The second entrance is called East entrance which is parallel to the Karshaka road.

Developments of Ernakulam Junction Railway Station
Ernakulam Junction was the first railway station in Kerala to have an escalator. It was installed on 9 September 2013. The first ATM facility and Railway cyber cafe to be installed at a railway station in Kerala was Ernakulam Junction. Even though there have been many proposals to convert Ernakulam junction into a world class station, no development activity is happening at present.