Mrs Salusalu, 50, a farmer from the village of Nukulau, more than 100 kilometres from Suva, has been a stallholder at the market for nine years, selling root crops, vegetables and fruits.
Kensington Palace said there were "crowd management issues" but reporters at the market noticed nothing unusual about the crowds or their behaviour.
Meghan, who looked slightly flustered during the hurried walk through the market, shook Mrs Salusalu's hand, and said: "It's very good to meet you", before moving on.
The Duchess of Sussex used the speech to speak about the importance of access to education for all during her first official speech during the royal tour of Fiji, and only her second ever as a member of the royal family. Earlier, it was reported that Meghan, who is about 12 weeks pregnant, will reduce her engagements during the ongoing 16-day royal tour. Harry was not scheduled to visit the market, and was instead unveiling a plaque at a forest site home to species such as the Fiji tree frog.
The Duchess said it was through "scholarships, financial aid programmes and earnings from a job on campus" she was able to afford to attend university.
While speaking to students and staff of the University of the South Pacific, Prince Harry also highlighted that in his new role as the Commonwealth Youth Ambassador his goal is to listen to young people's concerns and to learn about the work that they are doing to combat these issues and highlight young people's achievements to the highest levels.
On Tuesday, the couple attended a state dinner at the Grand Pacific Hotel and Harry said Fiji and Britain shared a love of rugby and a sense of humor.
"Everyone should be afforded the opportunity to receive the education that they want, but more importantly the education that they have the right to receive".
The couple is scheduled to visit Tonga on Thursday before returning to Sydney on Friday night for the final days of the Invictus Games, Harry's brainchild and the focus of their tour. The couple will then finish their trip with a four-day visit to New Zealand.