The verdict against Salman, whose Al-Wefaq movement was dissolved in July, was reimposed after the court of cassation had overturned the nine-year jail term in October.
Salman, 51, is considered a moderate who has pushed for a constitutional monarchy in Bahrain, unlike hardline groups who have demanded the toppling the Al-Khalifa dynasty
His arrest in December 2014 had sparked protests in Shiite-majority Bahrain.
The Shiite cleric was sentenced in July 2015 to four years in jail after being convicted of inciting hatred in the Sunni-ruled Gulf kingdom.
Also Read
The court of cassation overturned that sentence on October 17 and ordered a retrial before the appeals court.
It also rejected a request to release the cleric.
In July, a court ordered Al-Wefaq's dissolution for "harbouring terrorism", inciting violence and encouraging demonstrations which threatened to spark sectarian strife.
The decision drew strong criticism from UN chief Ban Ki-moon, Bahrain's allies in Washington and London, and Shiite-dominated Iran.
Al-Wefaq had the largest bloc in parliament before lawmakers walked out in February 2011 in protest over a deadly crackdown on Arab Spring-inspired protests.
Bahrain has harshly cracked down over the past five years on dissent by the Shiite majority, which they accuse of being manipulated by Iran.
The number of arrests and trials have spiralled.
The kingdom stripped 31 Shiite activists of their nationality in October 2012 for breaching state security, and Human Rights Watch says most of them have been left stateless.
It has repeatedly arrested and detained other opposition leaders, including Nabil Rajab, the founder of the Bahrain Centre for Human Rights.
The New York-based rights watchdog on Monday issued a statement calling for Rajab's immediate release, saying the charges against him "inherently violate the right to free expression".
Disclaimer: No Business Standard Journalist was involved in creation of this content