How to display the user picture on the search page?
Copy the file YOUR_SITE/modules/search/search-result.tpl.php to your theme and modify the code inside with this:

&lt;?php
//obtaining the username
$username = explode('(', $title);
$username = trim($username[0]);
//getting the user object
$user = user_load_by_name($username);
?&gt;
&lt;li class="&lt;?php print $classes; ?&gt;"&lt;?php print $attributes; ?&gt;&gt;
  &lt;?php print render($title_prefix); ?&gt;

  &lt;?php 
  /*
   * The following line will print the user picture
   */
  print theme('user_picture', array('account' =&gt;$user));
  ?&gt;

  &lt;h3 class="title"&lt;?php print $title_attributes; ?&gt;&gt;
    &lt;a href="&lt;?php print $url; ?&gt;"&gt;&lt;?php print $title; ?&gt;&lt;/a&gt;
  &lt;/h3&gt;
  &lt;?php print render($title_suffix); ?&gt;
  &lt;div class="search-snippet-info"&gt;
    &lt;?php if ($snippet): ?&gt;
      &lt;p class="search-snippet"&lt;?php print $content_attributes; ?&gt;&gt;&lt;?php print $snippet; ?&gt;&lt;/p&gt;
    &lt;?php endif; ?&gt;
    &lt;?php if ($info): ?&gt;
      &lt;p class="search-info"&gt;&lt;?php print $info; ?&gt;&lt;/p&gt;
    &lt;?php endif; ?&gt;
  &lt;/div&gt;
&lt;/li&gt;


This will be the output:



EDIT: If you want follow another way you can read this: How to access to the user info on the search page?