How can I avoid taking maternity leave for half a year and my job will be replaced?

First of all, you must respond to HR, indicating that the work will be done well and the attitude must be sincere. HR must be very difficult to be a human being, which is a recruitment risk. After all, you have only been employed for four months. If the probation period is half a year, you are likely to be dismissed during the probation period. In fact, at this point, the company generally won't dismiss you because it is illegal. Even if it is not illegal, then dismissing you will make employees feel chilling and your situation will make the company very embarrassed. After all, the cost of recruiting you is too high. Be sure to have a good attitude and try your best to finish the work. At this time, the company will understand you and will not let you work overtime so seriously. For the good of the company, you can ask for leave and deduct money appropriately, and then do the work well. It may be the best way to help the company do a good job intentionally or unintentionally and get less money.