I am using the blob module, and the upload file is larger than 16MB to report an error
Blob module MongoDb System.FormatException: Size 119275719 is greater than MaxDocumentSize 16777216
Does abp mongodb support GridFS?
or
Does the Blob module support uploading functions larger than 16MB

This is not about Blob Storing module of abp. It is about MongoDB max document size. I encourage you to read about enabling GridFS.
Abp's BlobStoring.Database.MongoDB package does not support GridFS currently. Maybe you can implement your own BlobContainer to use with GridFS and create a pull request to include it in abp.
Most helpful comment
This is not about Blob Storing module of abp. It is about MongoDB max document size. I encourage you to read about enabling GridFS.
Abp's BlobStoring.Database.MongoDB package does not support GridFS currently. Maybe you can implement your own BlobContainer to use with GridFS and create a pull request to include it in abp.