The FDA’s classification of medications for use during pregnancy can be divided into five classes: Class A, B, C, D, and X. Class A is a controlled study in which no adverse effects were found; Class B is one in which there is no evidence of adverse effects in humans and no adverse effects have been shown in animal studies; Class C is one in which the presence of adverse effects cannot be ruled out, but no animal studies or studies in humans are available; Class D is evidence of adverse effects and Grade X is contraindicated during pregnancy. Most psychotropic drugs are in the B-D range, for example, clozapine is a B grade. For example, olanzapine, quetiapine, haloperidol and paroxetine and fluoxetine are in class C. Lithium salts and sodium valproate are in class D. Therefore, it is better to take psychiatric drugs and not to get pregnant. Wait until the psychiatric symptoms are stable or even disappear, consolidate for a period of time, and gradually stop the medication, usually need to stop 1-2 months before you can conceive.