<ion-list>
  <ion-item>
    I love kittens!
    <ion-option-button class="button-positive">Share</ion-option-button>
    <ion-option-button class="button-assertive">Edit</ion-option-button>
  </ion-item>
</ion-list>

更改item-content的固定padding

<div class="content">
    <ion-item class="item-complex">
        <a class="item-content"></a>
    </ion-item>
</div>

css

.content .item-complex .item-content {
    padding:0px;
}