diff --git a/app/src/main/java/org/cutem/cutecalendar/presenter/newitems/ConferenceTypeNewItemBuilder.java b/app/src/main/java/org/cutem/cutecalendar/presenter/newitems/ConferenceTypeNewItemBuilder.java
new file mode 100644
index 0000000..16d0757
--- /dev/null
+++ b/app/src/main/java/org/cutem/cutecalendar/presenter/newitems/ConferenceTypeNewItemBuilder.java
@@ -0,0 +1,125 @@
+package org.cutem.cutecalendar.presenter.newitems;
+
+import javafx.fxml.FXML;
+import javafx.fxml.FXMLLoader;
+import javafx.scene.control.TextField;
+import org.cutem.cutecalendar.model.TodoItem;
+import org.cutem.cutecalendar.model.TodoItemFactory;
+import org.cutem.cutecalendar.model.TodoItemUtil;
+import org.cutem.cutecalendar.util.CalendarUtil;
+import org.jetbrains.annotations.Nullable;
+
+import java.io.IOException;
+import java.util.Calendar;
+
+public class ConferenceTypeNewItemBuilder extends NewItemBuilder {
+    public static class Factory implements IFactory {
+        @Override
+        public String getTypeName() {
+            return TYPE_NAME;
+        }
+
+        @Override
+        public NewItemBuilder construct(@Nullable TodoItem parent) {
+            return new OtherTypeNewItemBuilder(parent);
+        }
+    }
+
+    private static final String CONFERENCE_TYPE_LAYOUT = "fxml/newitem_layouts/conference_type_layout.fxml";
+
+    private static final int TYPE = TodoItem.CONFERENCE;
+
+    private static final String TYPE_NAME = TodoItem.typeName(TYPE);
+
+    private ClassLoader mClassLoader = getClass().getClassLoader();
+
+    @FXML
+    private TextField titleText;
+    @FXML
+    private TextField bgnTimeText;
+    @FXML
+    private TextField endTimeText;
+    @FXML
+    private TextField locationText;
+    @FXML
+    private TextField descriptionText;
+
+    protected ConferenceTypeNewItemBuilder(TodoItem parent) {
+        super(parent);
+
+        FXMLLoader loader = new FXMLLoader();
+        loader.setLocation(mClassLoader.getResource(CONFERENCE_TYPE_LAYOUT));
+        loader.setRoot(this);
+        loader.setController(this);
+
+        try {
+            loader.load();
+        } catch (IOException e) {
+            throw new IllegalStateException("cannot load " + CONFERENCE_TYPE_LAYOUT);
+        }
+    }
+
+    @Override
+    public @Nullable Object[] buildItem() {
+
+        String b = bgnTimeText.getText();
+        String e = endTimeText.getText();
+        String title = titleText.getText();
+        String location = locationText.getText();
+        String description = descriptionText.getText();
+
+        if (title.isEmpty()) { // fail
+            showAlert("议题还没有填");
+            return null;
+        } else if (location.isEmpty()) { // fail
+            showAlert("地点还没有填");
+            return null;
+        } else if (description.isEmpty()) { // fail
+            showAlert("内容还没有填");
+            return null;
+        } else if (b.trim().isEmpty() || e.trim().isEmpty()) {
+            showAlert("时间段还没有填");
+            return null;
+        }
+
+
+        // try build a TodoItem
+        // failed?
+        if (!CalendarUtil.isValidCalendarString(b) || !CalendarUtil.isValidCalendarString(e)) {
+            showAlert("give a valid time");
+            return null;
+        }
+        Calendar c1 = CalendarUtil.constructCalendar(b);
+        Calendar c2 = CalendarUtil.constructCalendar(e);
+
+        // failed?
+        if (c2.before(c1)) {
+            showAlert("开始时间在结束时间后");
+            return null;
+        }
+
+        // build
+        TodoItemFactory fac = new TodoItemFactory();
+        fac.type(TYPE).beginTime(c1).endTime(c2).stringProperties(TodoItem.TITLE, title).stringProperties(TodoItem.LOCATION, location).stringProperties(TodoItem.DESCRIPTION, description);
+        TodoItem item = fac.build();
+
+        if (checkConflict(item)) {
+            if (mParent == null) {
+                return new Object[]{item};
+            } else {
+                TodoItem[] res = TodoItemUtil.bind(mParent, item);
+                return new Object[]{res[0], res[1]};
+            }
+        } else { // fail
+            return null;
+        }
+
+    }
+
+    @Override
+    public String getTypeName() {
+        return TYPE_NAME;
+    }
+
+
+}