The oldest documented reference to the city of Parvomay is from 1576 in the register of Ottoman taxes in Bulgaria. In 1671 the Turkish travel writer Evliya Celebi mentions the village of Iskra to the south. Parvomay was for a time part of Eastern Rumelia, an autonomous province within the Ottoman Empire after the Treaty of Berlin in 1878. After the revolution of September 6, 1885, the province was annexed by the Principality of Bulgaria. On 14 April 1928, a sequence of two earthquakes with a magnitude of approximately 7 in central Bulgaria destroyed 74,000 buildings and killed 114 people in the nearby cities of Plovdiv, Chirpan (to the north) and Parvomay. A newspaper at the time reported that 1000 buildings in Parvomay collapsed.
Until 1894,The town of Parvomay was known by its Turkish names of Hadzi Ejles, Hadzi-Ele, Hadzi-Jeiles, Khadzhi Eiles, or Khadzhi-Eles ("Hacı İlyas" in Turkish). Until 1945 its name was Borisovgrad (after Bulgaria's last Tsar, Boris to celebrate his birthday on 30 January 1894). On 1st May 1945 the name Borisovgrad was changed to Parvomay by the idea of Dr. Georgi Slavchev.
The first school
The first school in Parvomay was Primary school "St.St. Cyril and Methodius ". It was built in 1836 and one of the first teachers was priest Nikola.
First altar
In 1849 the first church was built that you can see to this day as the church temple "St. Dimitar".
The railway
In 1873 the railway from Belovo to Dimitrovgrad was built. This railway was normally supposed to go through Debur, however, this decision was declined. Some say the Austrian engineer got bribed with 100 lira to change the route, others say the citizens didn't want the noise to scare the animals and the sparks to light up the crops. Either way, it is now going through Parvomay town.
National heroes
Angel Stoyanov Kariotov, also known as Angel Vojvoda, was one of the biggest voivods in Bulgarian history, who led the well-organized band in the regions of Plovdiv and Haskovo around 1832 and 1862. He was born in the village of Dragoynovo in the Municipality Parvomay.
The Angel peak in mount Rila is named after him. Angel Vojvoda was also a main contributor and initiator of the only Bulgarian monastery built during the Ottoman dominance - the Arapovo Monastery "St. Nedelya".
The first post office
The post office in the town of Parvomay was found on 1 January 1881.
The first hospital
In 1882 the hospital in the town of Parvomay was built. It had 1 doctor and 10 hospital beds.