diff --git a/.gitignore b/.gitignore
index 0bb7d61..b622d60 100644
--- a/.gitignore
+++ b/.gitignore
@@ -15,8 +15,10 @@ old/
 data/cache/
 data/electron/
 data/nucleon/
-!data/nucleon/test*
+data/global/
+!data/nucleon/TEST*
 data/orbital/
+config/config_dev.toml
 AGENTS.md
 
 # Byte-compiled / optimized / DLL files
diff --git a/config/config.toml b/config/config.toml
index fc60ff8..a24b7a0 100644
--- a/config/config.toml
+++ b/config/config.toml
@@ -19,6 +19,9 @@ timezone_offset = +28800 # 中国标准时间 (UTC+8)
 [interface.memorizor]
 autovoice = true # 自动语音播放, 仅限于 recognition 组件
 
+[algorithm]
+default = "SM-2" # 主要算法; 可选项: SM-2, SM-15M, FSRS
+
 [puzzles] # 谜题默认配置
 
 [puzzles.mcq]
@@ -30,6 +33,7 @@ min_denominator = 3
 [paths] # 相对于配置文件的 ".." (即工作目录) 而言 或绝对路径
 nucleon_dir = "./data/nucleon"
 electron_dir = "./data/electron"
+global_dir = "./data/global" # 全局数据路径, SM-15 等算法需要
 orbital_dir = "./data/orbital"
 cache_dir = "./data/cache"
 template_dir = "./data/template"
diff --git a/src/heurams/context.py b/src/heurams/context.py
index abf29d1..80f7feb 100644
--- a/src/heurams/context.py
+++ b/src/heurams/context.py
@@ -32,7 +32,11 @@ try:
 except Exception as e:
     print("未能加载自定义用户配置")
     logger.warning("未能加载自定义用户配置, 错误: %s", e)
-
+if pathlib.Path(rootdir / "default" / "config" / "config_dev.toml").exists():
+    logger.debug("使用开发设置")
+    config_var: ContextVar[ConfigFile] = ContextVar(
+    "config_var", default=ConfigFile(workdir / "config" / "config_dev.toml")
+)
 # runtime_var: ContextVar = ContextVar('runtime_var', default=dict()) # 运行时共享数据
 
 
diff --git a/src/heurams/default/config/config_dev.toml b/src/heurams/default/config/config_dev.toml
new file mode 100644
index 0000000..e69de29
diff --git a/src/heurams/kernel/algorithms/sm15m.py b/src/heurams/kernel/algorithms/sm15m.py
index de79bd7..95e210e 100644
--- a/src/heurams/kernel/algorithms/sm15m.py
+++ b/src/heurams/kernel/algorithms/sm15m.py
@@ -11,13 +11,14 @@ import datetime
 import json
 import os
 from typing import TypedDict
-
+import pathlib
+from heurams.context import config_var
 from heurams.kernel.algorithms.sm15m_calc import (MAX_AF, MIN_AF, NOTCH_AF,
                                                   RANGE_AF, RANGE_REPETITION,
                                                   SM, THRESHOLD_RECALL, Item)
 
 # 全局状态文件路径
-_GLOBAL_STATE_FILE = os.path.expanduser("~/.sm15_global_state.json")
+_GLOBAL_STATE_FILE = os.path.expanduser(pathlib.Path(config_var.get()['paths']['global_dir']) / 'sm15m_global_state.json')
 
 
 def _get_global_sm():
diff --git a/src/heurams/kernel/particles/electron.py b/src/heurams/kernel/particles/electron.py
index 6afb128..cb7cf54 100644
--- a/src/heurams/kernel/particles/electron.py
+++ b/src/heurams/kernel/particles/electron.py
@@ -9,7 +9,7 @@ logger = get_logger(__name__)
 class Electron:
     """电子: 记忆分析元数据及算法"""
 
-    def __init__(self, ident: str, algodata: dict = {}, algo_name: str = "SM-2"):
+    def __init__(self, ident: str, algodata: dict = {}, algo_name: str = ""):
         """初始化电子对象 (记忆数据)
 
         Args:
@@ -17,6 +17,8 @@ class Electron:
             algodata: 算法数据字典, 包含算法的各项参数和设置
             algo: 使用的算法模块标识
         """
+        if algo_name == "":
+            algo_name = config_var.get()['algorithm']['default']
         logger.debug(
             "创建 Electron 实例, ident: '%s', algo_name: '%s', algodata: %s", ident, algo_name, algodata
         )