The reasons why no one participates in the vocational training of migrant workers are insufficient publicity, inappropriate training content, inappropriate training time and high training cost.

1. Insufficient publicity: It may be because migrant workers lack understanding of the importance and benefits of vocational training, or the publicity of training institutions is not in place enough to attract migrant workers to participate.

2. Inappropriate training content: It may be that the training content does not match the actual needs and working environment of migrant workers and does not meet their needs.

3. Inappropriate training time: It may be that the training time conflicts with the working hours of migrant workers and it is not convenient to participate.

4. The training cost is too high: it may be that the training cost is too high, which is beyond the affordability of migrant workers and does not attract them to participate.