When roasting pig's trotters, it is usually poured with boiling water or hot clear soup first, and then put into the furnace to soften the roasted pig's trotters. Because the temperature of different ovens is different, you can explore several times to find out the most suitable temperature and time. If the temperature is 250 degrees, generally, 20 minutes is enough, but if it is adjusted to 180 degrees, it is recommended to bake for a long time, 25 minutes. If the oven can still heat up, preheat to 220 degrees and bake for 5- 10 minutes.