diff --git a/i2c/requirements.txt b/i2c/requirements.txt
new file mode 100644
index 0000000..53eba46
--- /dev/null
+++ b/i2c/requirements.txt
@@ -0,0 +1 @@
+anytree
diff --git a/i2c/tree.py b/i2c/tree.py
new file mode 100644
index 0000000..87d28d1
--- /dev/null
+++ b/i2c/tree.py
@@ -0,0 +1,92 @@
+#!/bin/python
+
+import re
+import sys
+
+from anytree import Node, RenderTree
+
+usage = """
+Usage: using local file or stdin to parse i2c bus info to tree
+    1. ssh user@<ip> "i2cdetect -l" > i2c_bus_info.txt
+    2. python tree.py i2c_bus_info.txt
+
+    or
+
+    ssh user@<ip> "i2cdetect -l" | python tree.py
+"""
+
+node_dict = {}
+root = Node("root")
+
+
+def parse_line(line):
+    line = line.strip()
+    regex = re.compile(r"(i2c-\d+)\s+i2c\s+(.*)\s+I2C adapter")
+    m = regex.match(line)
+    if m:
+        bus = m.group(1)
+        name = m.group(2).strip()
+        return (bus, name)
+    else:
+        return None
+
+
+def draw(line):
+    i2c = parse_line(line)
+    if not i2c:
+        return
+
+    bus, name = i2c
+
+    if "mux" not in name:
+        node_dict[bus] = Node(bus, parent=root)
+    else:
+        mux_regex = re.compile(r"i2c-(\d+)-mux \(chan_id (\d+)\)")
+        m = mux_regex.match(name)
+        if m:
+            i2c = m.group(1)
+            if "i2c-" + i2c in node_dict:
+                node_dict[bus] = Node(bus, parent=node_dict["i2c-" + i2c])
+
+
+def parse_from_file(file):
+    with open(file, "r") as f:
+        lines = f.readlines()
+        for line in lines:
+            draw(line)
+
+
+def parse_from_stdin():
+    lines = sys.stdin.readlines()
+    for line in lines:
+        draw(line)
+
+
+def print_tree():
+    for pre, fill, node in RenderTree(root):
+        print("%s%s" % (pre, node.name))
+
+
+if __name__ == "__main__":
+    if len(sys.argv) == 2:
+        if (
+            sys.argv[1] == "-h"
+            or sys.argv[1] == "--help"
+            or sys.argv[1] == "help"
+            or sys.argv[1] == "?"
+        ):
+            print(usage)
+            sys.exit(0)
+
+    try:
+        if len(sys.argv) == 2:
+            file = sys.argv[1]
+            parse_from_file(file)
+        else:
+            parse_from_stdin()
+    except Exception as e:
+        print(e)
+        print(usage)
+        sys.exit(1)
+
+    print_tree()