The 32-year-old "Super Bass" rapper was recently involved in a Twitter feud after Swift earned a total of nine nods, including video of the year for "Bad Blood" while Minaj was not nominated in the video of the year category.
The singer took to Instagram and insisted she was criticising the "system" and not "any of the women", reported E! Online.
"(The tweets had) Nothing to do with any of the women, but everything to do with a system that doesn't credit black women for their contributions to pop culture as freely/quickly as they reward others," Minaj said.
"We are huge trend-setters, not second class citizens that get thrown crumbs... This isn't anger. This is #information. It's all love to MTV. Kisses to my fans and thank you for my 3 nominations," she said.
Earlier, after the full nominees were announced, Minaj had tweeted her disappointment, and somehow ended up having a spat with Swift.
"If your video celebrates women with very slim bodies, you will be nominated for video of the year," Minaj had written.