diff --git a/study/kernel/01-process/05-schedule/04-cfs/02-vruntime/README.md b/study/kernel/01-process/05-schedule/04-cfs/02-vruntime/README.md
index c42074a..ef1aa5b 100644
--- a/study/kernel/01-process/05-schedule/04-cfs/02-vruntime/README.md
+++ b/study/kernel/01-process/05-schedule/04-cfs/02-vruntime/README.md
@@ -131,8 +131,8 @@ $$	delta =delta \times \dfrac{NICE\_0\_LOAD}{curr->se->load.weight}   ;(if curr.
 
 | 条件 | 公式 |
 |:-------:|:-------:|
-| curr.nice != NICE_0_LOAD | $$curr->vruntime += delta\_exec \times \dfrac{NICE\_0\_LOAD}{curr->se->load.weight}    (if )$$ |
-| curr.nice == NICE_0_LOAD | $$ curr->vruntime += delta $$ |
+| curr.nice != NICE_0_LOAD | $curr->vruntime += delta\_exec \times \dfrac{NICE\_0\_LOAD}{curr->se->load.weight}    (if )$ |
+| curr.nice == NICE_0_LOAD | $ curr->vruntime += delta $ |
 
 在该计算中可以派上用场了, 回想一下子,　可知越重要的进程会有越高的优先级(即, 越低的nice值), 会得到更大的权重, 因此累加的虚拟运行时间会小一点,