diff --git a/SDPhotoBrowser/SDPhotoBrowser/SDWaitingView.h b/SDPhotoBrowser/SDPhotoBrowser/SDWaitingView.h
index d688e1e..090bbde 100755
--- a/SDPhotoBrowser/SDPhotoBrowser/SDWaitingView.h
+++ b/SDPhotoBrowser/SDPhotoBrowser/SDWaitingView.h
@@ -13,5 +13,6 @@
 
 @property (nonatomic, assign) CGFloat progress;
 @property (nonatomic, assign) int mode;
+@property (nonatomic, assign) CGFloat lineWidth;
 
 @end
diff --git a/SDPhotoBrowser/SDPhotoBrowser/SDWaitingView.m b/SDPhotoBrowser/SDPhotoBrowser/SDWaitingView.m
index ca8ae36..ba4cfa2 100755
--- a/SDPhotoBrowser/SDPhotoBrowser/SDWaitingView.m
+++ b/SDPhotoBrowser/SDPhotoBrowser/SDWaitingView.m
@@ -79,10 +79,11 @@ - (void)drawRect:(CGRect)rect
             
         default:
             {
-                CGContextSetLineWidth(ctx, 15);
+                CGFloat width = self.lineWidth ? self.lineWidth : 15;
+                CGContextSetLineWidth(ctx, width);
                 CGContextSetLineCap(ctx, kCGLineCapRound);
                 CGFloat to = - M_PI * 0.5 + self.progress * M_PI * 2 + 0.05; // 初始值0.05
-                CGFloat radius = MIN(rect.size.width, rect.size.height) * 0.5 - SDWaitingViewItemMargin;
+                CGFloat radius = MIN(rect.size.width, rect.size.height) * 0.5 - width / 2;
                 CGContextAddArc(ctx, xCenter, yCenter, radius, - M_PI * 0.5, to, 0);
                 CGContextStrokePath(ctx);
             }