After bisket jatra, Gai jatra holds the record of the largest jatra of Kathmandu valley being sanctioned for eight days. Although this jatra is celebrated in patan, Kathmandu, and Kritipur, Bhaktapur grabs the attention of visitors through its unique style to celebrate this jatra. Gai jatra or sa paru is a satiric street festival where anyone can make jokes about social issues.Tall bamboo poles wrapped with clothes with horns made of straws at the top covered by an umbrella symbolizes the cow or gai. That is carried by four-person following the parade of people playing ghintang ghisi and makha pyakhan. This view can be observed on the very first day of the jatra. During the festival, many other acts are performed which include Kawana pyakhan, bhalu nach, khicha pyakhan, bhairava dance, lakhey dance, Devi dance and many more. Moreover, all dance act is performed in front of the current durbar square.
As per history, this jatra is said to be commenced by King Pratap Malla, the then ruler of Kathmandu to reduce the grievance of the queen. It is said that she went on depression due to losing her most adored and the second eldest son, Chakrabartendra. To make her realize that she is not the only one who lost her son or any family member, he ordered everyone to come up with crazy and funny attire from the family suffering from the same grievance. And, this is how the Gai jatra commenced.