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+.. This work is licensed under a Creative Commons Attribution 4.0 International License.
+.. http://creativecommons.org/licenses/by/4.0
+
+
+Parser nfv toscaparser Installation
+===================================
+
+Nfv tocsa provide two method for installation, please follow the below installation steps to install toscaparser.
+
+By code source
+^^^^^^^^^^^^^^
+
+Step 1: Clone the parser project.
+
+Step 2: Install the tosca-parser sub project.
+
+.. code-block:: bash
+
+    # uninstall pre-installed tosca-parser
+    pip uninstall -y tosca-parser
+
+    # change directory to tosca-parser
+    cd parser/tosca2heat/tosca-parser
+
+    # install requirements
+    pip install -r requirements.txt
+
+    # install tosca-parser
+    python setup.py install
+
+By pacage
+^^^^^^^^^^
+Step 1: Make user pip has been already installed.
+
+.. code-block:: bash
+
+    # for ubuntu or debin
+    apt-get install python-pip
+    or
+    # for centos,rhel or fedora
+    yum install python-pip
+
+Step 2: install nfv-tsoca using pip
+
+.. code-block:: bash
+
+    pip install nfv-tosca
+
+
+**Notes**: It must uninstall pre-installed tosca-parser before install the component, which is sure to use the
+OPNFV version of tosca-parser other than openstack's components.
+