I have submitted an application to immigrate to Canada, and the case is under trial. Can I apply for a tourist visa at the same time?

Theoretically, there is no conflict. However, in practice, you will be suspected of your purpose. You've been in a similar situation. You applied for investment immigration to Canada. While listening to the materials, you applied for a business trip to Canada. In the end, the business trip was rejected and the investment immigrants were recalled. The reason is that you tend to emigrate, and you can't think about foreigners with the thinking of China people. Foreigners think it's one thing for you to apply for immigration, so whether you want to take a shortcut or stay illegally when applying for a business trip or traveling to Canada, you must follow the process and so on. Therefore, personal suggestions should be carefully considered.