diff --git a/spec/qiniu/image_spec.rb b/spec/qiniu/image_spec.rb
index 1047ef2..b6d054a 100755
--- a/spec/qiniu/image_spec.rb
+++ b/spec/qiniu/image_spec.rb
@@ -13,14 +13,16 @@ module Qiniu
 
         ### 复用RubySDK-Test-Storage空间
         @bucket = 'RubySDK-Test-Storage'
+        @bucket = make_unique_bucket(@bucket)
 
         ### 尝试创建空间
         result = Qiniu.mkbucket(@bucket)
         puts result.inspect
 
-        @key = "image_logo_for_test.png"
+        pic_fname = "image_logo_for_test.png"
+        @key = make_unique_key_in_bucket(pic_fname)
 
-        local_file = File.expand_path('../' + @key, __FILE__)
+        local_file = File.expand_path('../' + pic_fname, __FILE__)
 
         upopts = {
             :scope => @bucket,
diff --git a/spec/qiniu/management_spec.rb b/spec/qiniu/management_spec.rb
index 6c32671..34ab775 100755
--- a/spec/qiniu/management_spec.rb
+++ b/spec/qiniu/management_spec.rb
@@ -12,12 +12,15 @@ module Qiniu
 
       before :all do
         @bucket = 'RubySDK-Test-Management'
+        @bucket = make_unique_bucket(@bucket)
 
         ### 尝试创建Bucket
         result = Qiniu.mkbucket(@bucket)
         puts result.inspect
 
         @key = Digest::SHA1.hexdigest((Time.now.to_i+rand(100)).to_s)
+        @key = make_unique_key_in_bucket(@key)
+
         @key2 = @key + rand(100).to_s
       end
 
diff --git a/spec/qiniu/misc_spec.rb b/spec/qiniu/misc_spec.rb
index e970ce9..c49f818 100755
--- a/spec/qiniu/misc_spec.rb
+++ b/spec/qiniu/misc_spec.rb
@@ -12,6 +12,7 @@ module Qiniu
       before :all do
         ### 复用RubySDK-Test-Management空间
         @bucket = 'RubySDK-Test-Management'
+        @bucket = make_unique_bucket(@bucket)
 
         result = Qiniu.mkbucket(@bucket)
         puts result.inspect
diff --git a/spec/qiniu/qiniu_spec.rb b/spec/qiniu/qiniu_spec.rb
index 1c62d43..86a014e 100755
--- a/spec/qiniu/qiniu_spec.rb
+++ b/spec/qiniu/qiniu_spec.rb
@@ -10,6 +10,8 @@ module Qiniu
 
     before :all do
       @bucket = 'RubySDK-Test'
+      @bucket = make_unique_bucket(@bucket)
+
       @test_image_bucket = @bucket
 
       ### 尝试创建Bucket
@@ -17,6 +19,8 @@ module Qiniu
       puts result.inspect
 
       @key = Digest::SHA1.hexdigest Time.now.to_s
+      @key = make_unique_key_in_bucket(@key)
+
       @key2 = @key + rand(100).to_s
       #@domain = @bucket + '.dn.qbox.me'
 
diff --git a/spec/qiniu/upload_spec.rb b/spec/qiniu/upload_spec.rb
index bdb1631..895d54a 100755
--- a/spec/qiniu/upload_spec.rb
+++ b/spec/qiniu/upload_spec.rb
@@ -11,28 +11,34 @@ module Qiniu
 
       before :all do
         @bucket = 'RubySDK-Test-Storage'
+        @bucket = make_unique_bucket(@bucket)
 
         ### 尝试创建Bucket
         result = Qiniu.mkbucket(@bucket)
         puts result.inspect
 
         @key = Digest::SHA1.hexdigest((Time.now.to_i+rand(100)).to_s)
+        @key = make_unique_key_in_bucket(@key)
 
         @localfile_5m = "5M.txt"
         File.open(@localfile_5m, "w"){|f| 5242888.times{ f.write(rand(9).to_s) }}
         @key_5m = Digest::SHA1.hexdigest(@localfile_5m+Time.now.to_s)
+        @key_5m = make_unique_key_in_bucket(@key_5m)
 
         @localfile_4m = "4M.txt"
         File.open(@localfile_4m, "w"){|f| (1 << 22).times{ f.write(rand(9).to_s) }}
         @key_4m = Digest::SHA1.hexdigest(@localfile_4m+Time.now.to_s)
+        @key_4m = make_unique_key_in_bucket(@key_4m)
 
         @localfile_8m = "8M.txt"
         File.open(@localfile_8m, "w"){|f| (1 << 23).times{ f.write(rand(9).to_s) }}
         @key_8m = Digest::SHA1.hexdigest(@localfile_8m+Time.now.to_s)
+        @key_8m = make_unique_key_in_bucket(@key_8m)
 
         @localfile_1m = "1M.txt"
         File.open(@localfile_1m, "w"){|f| (1 << 20).times{ f.write(rand(9).to_s) }}
         @key_1m = Digest::SHA1.hexdigest(@localfile_1m+Time.now.to_s)
+        @key_1m = make_unique_key_in_bucket(@key_1m)
       end
 
       after :all do
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index e695e04..b5ec3ee 100755
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -9,3 +9,11 @@ RSpec.configure do |config|
     Qiniu.establish_connection! :access_key => ENV["QINIU_ACCESS_KEY"], :secret_key => ENV["QINIU_SECRET_KEY"]
   end
 end
+
+def make_unique_bucket (bucket)
+    bucket + "-" + ENV["QINIU_ACCESS_KEY"][0, 8]
+end # make_unique_bucket
+
+def make_unique_key_in_bucket (key)
+    "#{RUBY_VERSION}-p#{RUBY_PATCHLEVEL}-" + key
+end # make_unique_key_in_bucket